1---------------------------------------- 226 September 2014. Summary of changes for version 20140926: 3 41) ACPICA kernel-resident subsystem: 5 6Updated the GPIO operation region handler interface (GeneralPurposeIo). 7In order to support GPIO Connection objects with multiple pins, along 8with the related Field objects, the following changes to the interface 9have been made: The Address is now defined to be the offset in bits of 10the field unit from the previous invocation of a Connection. It can be 11viewed as a "Pin Number Index" into the connection resource descriptor. 12The BitWidth is the exact bit width of the field. It is usually one bit, 13but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 14additional information and examples. 15 16GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 17corresponding _Lxx/_Exx methods are disabled (they may have been enabled 18by the firmware), so that they cannot fire until they are enabled via 19AcpiUpdateAllGpes. Rafael J. Wysocki. 20 21Added a new return flag for the Event/GPE status interfaces -- 22AcpiGetEventStatus and AcpiGetGpeStatus. The new 23ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 24GPE currently has a handler associated with it, and can thus actually 25affect the system. Lv Zheng. 26 27Example Code and Data Size: These are the sizes for the OS-independent 28acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 29debug version of the code includes the debug output trace mechanism and 30has a much larger code and data size. 31 32 Current Release: 33 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 34 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 35 Previous Release: 36 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 37 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 38 392) iASL Compiler/Disassembler and Tools: 40 41iASL: Fixed a memory allocation/free regression introduced in 20140828 42that could cause the compiler to crash. This was introduced inadvertently 43during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 441113. 45 46iASL: Removed two error messages that have been found to create false 47positives, until they can be fixed and fully validated (ACPICA BZ 1112): 481) Illegal forward reference within a method 492) Illegal reference across two methods 50 51iASL: Implemented a new option (-lm) to create a hardware mapping file 52that summarizes all GPIO, I2C, SPI, and UART connections. This option 53works for both the compiler and disassembler. See the iASL compiler user 54guide for additional information and examples (section 6.4.6). 55 56AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 57version 2. This corrects the AE_BAD_HEADER exception seen on systems with 58a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 59 60AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 61unless STDIN is actually a terminal. Assists with batch-mode processing. 62ACPICA BZ 1114. 63 64Disassembler/AcpiHelp: Added another large group of recognized _HID 65values. 66 67 68---------------------------------------- 6928 August 2014. Summary of changes for version 20140828: 70 711) ACPICA kernel-resident subsystem: 72 73Fixed a problem related to the internal use of the Timer() operator where 74a 64-bit divide could cause an attempted link to a double-precision math 75library. This divide is not actually necessary, so the code was 76restructured to eliminate it. Lv Zheng. 77 78ACPI 5.1: Added support for the runtime validation of the _DSD package 79(similar to the iASL support). 80 81ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 82SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 83 84Example Code and Data Size: These are the sizes for the OS-independent 85acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 86debug version of the code includes the debug output trace mechanism and 87has a much larger code and data size. 88 89 Current Release: 90 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 91 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 92 Previous Release: 93 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 94 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 95 962) iASL Compiler/Disassembler and Tools: 97 98AcpiExec: Fixed a problem on unix systems where the original terminal 99state was not always properly restored upon exit. Seen when using the -v 100option. ACPICA BZ 1104. 101 102iASL: Fixed a problem with the validation of the ranges/length within the 103Memory24 resource descriptor. There was a boundary condition when the 104range was equal to the (length -1) caused by the fact that these values 105are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 106 107Disassembler: Fixed a problem with the GpioInt descriptor interrupt 108polarity 109flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 110is 111now supported properly. 112 113ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 114in the disassembler, data table compiler, and table template generator. 115 116iASL: Added a requirement for Device() objects that one of either a _HID 117or _ADR must exist within the scope of a Device, as per the ACPI 118specification. Remove a similar requirement that was incorrectly in place 119for the _DSD object. 120 121iASL: Added error detection for illegal named references within control 122methods that would cause runtime failures. Now trapped as errors are: 1) 123References to objects within a non-parent control method. 2) Forward 124references (within a method) -- for control methods, AML interpreters use 125a one-pass parse of control methods. ACPICA BZ 1008. 126 127iASL: Added error checking for dependencies related to the _PSx power 128methods. ACPICA BZ 1029. 1291) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 130_PS3. 1312) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 132scope. 133 134iASL and table compiler: Cleanup miscellaneous memory leaks by fully 135deploying the existing object and string caches and adding new caches for 136the table compiler. 137 138iASL: Split the huge parser source file into multiple subfiles to improve 139manageability. Generation now requires the M4 macro preprocessor, which 140is part of the Bison distribution on both unix and windows platforms. 141 142AcpiSrc: Fixed and removed all extraneous warnings generated during 143entire ACPICA source code scan and/or conversion. 144 145 146---------------------------------------- 147 14824 July 2014. Summary of changes for version 20140724: 149 150The ACPI 5.1 specification has been released and is available at: 151http://uefi.org/specs/access 152 153 1540) ACPI 5.1 support in ACPICA: 155 156ACPI 5.1 is fully supported in ACPICA as of this release. 157 158New predefined names. Support includes iASL and runtime ACPICA 159validation. 160 _CCA (Cache Coherency Attribute). 161 _DSD (Device-Specific Data). David Box. 162 163Modifications to existing ACPI tables. Support includes headers, iASL 164Data Table compiler, disassembler, and the template generator. 165 FADT - New fields and flags. Graeme Gregory. 166 GTDT - One new subtable and new fields. Tomasz Nowicki. 167 MADT - Two new subtables. Tomasz Nowicki. 168 PCCT - One new subtable. 169 170Miscellaneous. 171 New notification type for System Resource Affinity change events. 172 173 1741) ACPICA kernel-resident subsystem: 175 176Fixed a regression introduced in 20140627 where a fault can happen during 177the deletion of Alias AML namespace objects. The problem affected both 178the core ACPICA and the ACPICA tools including iASL and AcpiExec. 179 180Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 181simple mechanism to enable wake GPEs that have no associated handler or 182control method. Rafael Wysocki. 183 184Updated the AcpiEnableGpe interface to disallow the enable if there is no 185handler or control method associated with the particular GPE. This will 186help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 187 188Updated GPE handling and dispatch by disabling the GPE before clearing 189the status bit for edge-triggered GPEs. Lv Zheng. 190 191Added Timer() support to the AML Debug object. The current timer value is 192now displayed with each invocation of (Store to) the debug object to 193enable simple generation of execution times for AML code (method 194execution for example.) ACPICA BZ 1093. 195 196Example Code and Data Size: These are the sizes for the OS-independent 197acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 198debug version of the code includes the debug output trace mechanism and 199has a much larger code and data size. 200 201 Current Release: 202 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 203 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 204 Previous Release: 205 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 206 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 207 208 2092) iASL Compiler/Disassembler and Tools: 210 211Fixed an issue with the recently added local printf implementation, 212concerning width/precision specifiers that could cause incorrect output. 213Lv Zheng. ACPICA BZ 1094. 214 215Disassembler: Added support to detect buffers that contain UUIDs and 216disassemble them to an invocation of the ToUUID operator. Also emit 217commented descriptions of known ACPI-related UUIDs. 218 219AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 220-u. Adds three new files. 221 222iASL: Update table compiler and disassembler for DMAR table changes that 223were introduced in September 2013. With assistance by David Woodhouse. 224 225---------------------------------------- 22627 June 2014. Summary of changes for version 20140627: 227 2281) ACPICA kernel-resident subsystem: 229 230Formatted Output: Implemented local versions of standard formatted output 231utilities such as printf, etc. Over time, it has been discovered that 232there are in fact many portability issues with printf, and the addition 233of this feature will fix/prevent these issues once and for all. Some 234known issues are summarized below: 235 2361) Output of 64-bit values is not portable. For example, UINT64 is %ull 237for the Linux kernel and is %uI64 for some MSVC versions. 2382) Invoking printf consistently in a manner that is portable across both 23932-bit and 64-bit platforms is difficult at best in many situations. 2403) The output format for pointers varies from system to system (leading 241zeros especially), and leads to inconsistent output from ACPICA across 242platforms. 2434) Certain platform-specific printf formats may conflict with ACPICA use. 2445) If there is no local C library available, ACPICA now has local support 245for printf. 246 247-- To address these printf issues in a complete manner, ACPICA now 248directly implements a small subset of printf format specifiers, only 249those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 250 251Implemented support for ACPICA generation within the EFI environment. 252Initially, the AcpiDump utility is supported in the UEFI shell 253environment. Lv Zheng. 254 255Added a new external interface, AcpiLogError, to improve ACPICA 256portability. This allows the host to redirect error messages from the 257ACPICA utilities. Lv Zheng. 258 259Added and deployed new OSL file I/O interfaces to improve ACPICA 260portability: 261 AcpiOsOpenFile 262 AcpiOsCloseFile 263 AcpiOsReadFile 264 AcpiOsWriteFile 265 AcpiOsGetFileOffset 266 AcpiOsSetFileOffset 267There are C library implementations of these functions in the new file 268service_layers/oslibcfs.c -- however, the functions can be implemented by 269the local host in any way necessary. Lv Zheng. 270 271Implemented a mechanism to disable/enable ACPI table checksum validation 272at runtime. This can be useful when loading tables very early during OS 273initialization when it may not be possible to map the entire table in 274order to compute the checksum. Lv Zheng. 275 276Fixed a buffer allocation issue for the Generic Serial Bus support. 277Originally, a fixed buffer length was used. This change allows for 278variable-length buffers based upon the protocol indicated by the field 279access attributes. Reported by Lan Tianyu. Lv Zheng. 280 281Fixed a problem where an object detached from a namespace node was not 282properly terminated/cleared and could cause a circular list problem if 283reattached. ACPICA BZ 1063. David Box. 284 285Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 286 287Fixed a possible memory leak in an error return path within the function 288AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 289 290Example Code and Data Size: These are the sizes for the OS-independent 291acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 292debug version of the code includes the debug output trace mechanism and 293has a much larger code and data size. 294 295 Current Release: 296 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 297 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 298 Previous Release: 299 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 300 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 301 302 3032) iASL Compiler/Disassembler and Tools: 304 305Disassembler: Add dump of ASCII equivalent text within a comment at the 306end of each line of the output for the Buffer() ASL operator. 307 308AcpiDump: Miscellaneous changes: 309 Fixed repetitive table dump in -n mode. 310 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 311the ACPI 2.0 GUID fails. 312 313iASL: Fixed a problem where the compiler could fault if incorrectly given 314an acpidump output file as input. ACPICA BZ 1088. David Box. 315 316AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 317they are invoked without any arguments. 318 319Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 3201086. Colin Ian King. 321 322Disassembler: Cleaned up a block of code that extracts a parent Op 323object. Added a comment that explains that the parent is guaranteed to be 324valid in this case. ACPICA BZ 1069. 325 326---------------------------------------- 32724 April 2014. Summary of changes for version 20140424: 328 3291) ACPICA kernel-resident subsystem: 330 331Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 332Some of these tables are known to contain a trailing NULL entry. Lv 333Zheng. 334 335Removed an extraneous error message for the case where there are a large 336number of system GPEs (> 124). This was the "32-bit FADT register is too 337long to convert to GAS struct" message, which is irrelevant for GPEs 338since the GPEx_BLK_LEN fields of the FADT are always used instead of the 339(limited capacity) GAS bit length. Also, several changes to ensure proper 340support for GPE numbers > 255, where some "GPE number" fields were 8-bits 341internally. 342 343Implemented and deployed additional configuration support for the public 344ACPICA external interfaces. Entire classes of interfaces can now be 345easily modified or configured out, replaced by stubbed inline functions 346by default. Lv Zheng. 347 348Moved all public ACPICA runtime configuration globals to the public 349ACPICA external interface file for convenience. Also, removed some 350obsolete/unused globals. See the file acpixf.h. Lv Zheng. 351 352Documentation: Added a new section to the ACPICA reference describing the 353maximum number of GPEs that can be supported by the FADT-defined GPEs in 354block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 355reference. 356 357Example Code and Data Size: These are the sizes for the OS-independent 358acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 359debug version of the code includes the debug output trace mechanism and 360has a much larger code and data size. 361 362 Current Release: 363 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 364 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 365 Previous Release: 366 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 367 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 368 369 3702) iASL Compiler/Disassembler and Tools: 371 372iASL and disassembler: Add full support for the LPIT table (Low Power 373Idle Table). Includes support in the disassembler, data table compiler, 374and template generator. 375 376AcpiDump utility: 3771) Add option to force the use of the RSDT (over the XSDT). 3782) Improve validation of the RSDP signature (use 8 chars instead of 4). 379 380iASL: Add check for predefined packages that are too large. For 381predefined names that contain subpackages, check if each subpackage is 382too large. (Check for too small already exists.) 383 384Debugger: Updated the GPE command (which simulates a GPE by executing the 385GPE code paths in ACPICA). The GPE device is now optional, and defaults 386to the GPE 0/1 FADT-defined blocks. 387 388Unix application OSL: Update line-editing support. Add additional error 389checking and take care not to reset terminal attributes on exit if they 390were never set. This should help guarantee that the terminal is always 391left in the previous state on program exit. 392 393---------------------------------------- 39425 March 2014. Summary of changes for version 20140325: 395 3961) ACPICA kernel-resident subsystem: 397 398Updated the auto-serialize feature for control methods. This feature 399automatically serializes all methods that create named objects in order 400to prevent runtime errors. The update adds support to ignore the 401currently executing AML SyncLevel when invoking such a method, in order 402to prevent disruption of any existing SyncLevel priorities that may exist 403in the AML code. Although the use of SyncLevels is relatively rare, this 404change fixes a regression where an AE_AML_MUTEX_ORDER exception can 405appear on some machines starting with the 20140214 release. 406 407Added a new external interface to allow the host to install ACPI tables 408very early, before the namespace is even created. AcpiInstallTable gives 409the host additional flexibility for ACPI table management. Tables can be 410installed directly by the host as if they had originally appeared in the 411XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 412(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 413with additional internal restructuring and cleanup. See the ACPICA 414Reference for interface details. Lv Zheng. 415 416Added validation of the checksum for all incoming dynamically loaded 417tables (via external interfaces or via AML Load/LoadTable operators). Lv 418Zheng. 419 420Updated the use of the AcpiOsWaitEventsComplete interface during Notify 421and GPE handler removal. Restructured calls to eliminate possible race 422conditions. Lv Zheng. 423 424Added a warning for the use/execution of the ASL/AML Unload (table) 425operator. This will help detect and identify machines that use this 426operator if and when it is ever used. This operator has never been seen 427in the field and the usage model and possible side-effects of the drastic 428runtime action of a full table removal are unknown. 429 430Reverted the use of #pragma push/pop which was introduced in the 20140214 431release. It appears that push and pop are not implemented by enough 432compilers to make the use of this feature feasible for ACPICA at this 433time. However, these operators may be deployed in a future ACPICA 434release. 435 436Added the missing EXPORT_SYMBOL macros for the install and remove SCI 437handler interfaces. 438 439Source code generation: 4401) Disabled the use of the "strchr" macro for the gcc-specific 441generation. For some versions of gcc, this macro can periodically expose 442a compiler bug which in turn causes compile-time error(s). 4432) Added support for PPC64 compilation. Colin Ian King. 444 445Example Code and Data Size: These are the sizes for the OS-independent 446acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 447debug version of the code includes the debug output trace mechanism and 448has a much larger code and data size. 449 450 Current Release: 451 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 452 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 453 Previous Release: 454 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 455 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 456 457 4582) iASL Compiler/Disassembler and Tools: 459 460Disassembler: Added several new features to improve the readability of 461the resulting ASL code. Extra information is emitted within comment 462fields in the ASL code: 4631) Known _HID/_CID values are decoded to descriptive text. 4642) Standard values for the Notify() operator are decoded to descriptive 465text. 4663) Target operands are expanded to full pathnames (in a comment) when 467possible. 468 469Disassembler: Miscellaneous updates for extern() handling: 4701) Abort compiler if file specified by -fe option does not exist. 4712) Silence unnecessary warnings about argument count mismatches. 4723) Update warning messages concerning unresolved method externals. 4734) Emit "UnknownObj" keyword for externals whose type cannot be 474determined. 475 476AcpiHelp utility: 4771) Added the -a option to display both the ASL syntax and the AML 478encoding for an input ASL operator. This effectively displays all known 479information about an ASL operator with one AcpiHelp invocation. 4802) Added substring match support (similar to a wildcard) for the -i 481(_HID/PNP IDs) option. 482 483iASL/Disassembler: Since this tool does not yet support execution on big- 484endian machines, added detection of endianness and an error message if 485execution is attempted on big-endian. Support for big-endian within iASL 486is a feature that is on the ACPICA to-be-done list. 487 488AcpiBin utility: 4891) Remove option to extract binary files from an acpidump; this function 490is made obsolete by the AcpiXtract utility. 4912) General cleanup of open files and allocated buffers. 492 493---------------------------------------- 49414 February 2014. Summary of changes for version 20140214: 495 4961) ACPICA kernel-resident subsystem: 497 498Implemented a new mechanism to proactively prevent problems with ill- 499behaved reentrant control methods that create named ACPI objects. This 500behavior is illegal as per the ACPI specification, but is nonetheless 501frequently seen in the field. Previously, this could lead to an 502AE_ALREADY_EXISTS exception if the method was actually entered by more 503than one thread. This new mechanism detects such methods at table load 504time and marks them "serialized" to prevent reentrancy. A new global 505option, AcpiGbl_AutoSerializeMethods, has been added to disable this 506feature if desired. This mechanism and global option obsoletes and 507supersedes the previous AcpiGbl_SerializeAllMethods option. 508 509Added the "Windows 2013" string to the _OSI support. ACPICA will now 510respond TRUE to _OSI queries with this string. It is the stated policy of 511ACPICA to add new strings to the _OSI support as soon as possible after 512they are defined. See the full ACPICA _OSI policy which has been added to 513the utilities/utosi.c file. 514 515Hardened/updated the _PRT return value auto-repair code: 5161) Do not abort the repair on a single subpackage failure, continue to 517check all subpackages. 5182) Add check for the minimum subpackage length (4). 5193) Properly handle extraneous NULL package elements. 520 521Added support to avoid the possibility of infinite loops when traversing 522object linked lists. Never allow an infinite loop, even in the face of 523corrupted object lists. 524 525ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 526pack(pop) directives to ensure that the ACPICA headers are independent of 527compiler settings or other host headers. 528 529Example Code and Data Size: These are the sizes for the OS-independent 530acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 531debug version of the code includes the debug output trace mechanism and 532has a much larger code and data size. 533 534 Current Release: 535 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 536 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 537 Previous Release: 538 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 539 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 540 541 5422) iASL Compiler/Disassembler and Tools: 543 544iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 545first reserved field was incorrectly forced to have a value of zero. This 546change correctly forces the field to have a value of one. ACPICA BZ 1081. 547 548Debugger: Added missing support for the "Extra" and "Data" subobjects 549when displaying object data. 550 551Debugger: Added support to display entire object linked lists when 552displaying object data. 553 554iASL: Removed the obsolete -g option to obtain ACPI tables from the 555Windows registry. This feature has been superseded by the acpidump 556utility. 557 558---------------------------------------- 55914 January 2014. Summary of changes for version 20140114: 560 5611) ACPICA kernel-resident subsystem: 562 563Updated all ACPICA copyrights and signons to 2014. Added the 2014 564copyright to all module headers and signons, including the standard Linux 565header. This affects virtually every file in the ACPICA core subsystem, 566iASL compiler, all ACPICA utilities, and the test suites. 567 568Improved parameter validation for AcpiInstallGpeBlock. Added the 569following checks: 5701) The incoming device handle refers to type ACPI_TYPE_DEVICE. 5712) There is not already a GPE block attached to the device. 572Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 573device. 574 575Correctly support "references" in the ACPI_OBJECT. This change fixes the 576support to allow references (namespace nodes) to be passed as arguments 577to control methods via the evaluate object interface. This is probably 578most useful for testing purposes, however. 579 580Improved support for 32/64 bit physical addresses in printf()-like 581output. This change improves the support for physical addresses in printf 582debug statements and other output on both 32-bit and 64-bit hosts. It 583consistently outputs the appropriate number of bytes for each host. The 584%p specifier is unsatisfactory since it does not emit uniform output on 585all hosts/clib implementations (on some, leading zeros are not supported, 586leading to difficult-to-read output). 587 588Example Code and Data Size: These are the sizes for the OS-independent 589acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 590debug version of the code includes the debug output trace mechanism and 591has a much larger code and data size. 592 593 Current Release: 594 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 595 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 596 Previous Release: 597 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 598 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 599 600 6012) iASL Compiler/Disassembler and Tools: 602 603iASL: Fix a possible fault when using the Connection() operator. Fixes a 604problem if the parent Field definition for the Connection operator refers 605to an operation region that does not exist. ACPICA BZ 1064. 606 607AcpiExec: Load of local test tables is now optional. The utility has the 608capability to load some various tables to test features of ACPICA. 609However, there are enough of them that the output of the utility became 610confusing. With this change, only the required local tables are displayed 611(RSDP, XSDT, etc.) along with the actual tables loaded via the command 612line specification. This makes the default output simler and easier to 613understand. The -el command line option restores the original behavior 614for testing purposes. 615 616AcpiExec: Added support for overlapping operation regions. This change 617expands the simulation of operation regions by supporting regions that 618overlap within the given address space. Supports SystemMemory and 619SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 620 621AcpiExec: Added region handler support for PCI_Config and EC spaces. This 622allows AcpiExec to simulate these address spaces, similar to the current 623support for SystemMemory and SystemIO. 624 625Debugger: Added new command to read/write/compare all namespace objects. 626The command "test objects" will exercise the entire namespace by writing 627new values to each data object, and ensuring that the write was 628successful. The original value is then restored and verified. 629 630Debugger: Added the "test predefined" command. This change makes this 631test public and puts it under the new "test" command. The test executes 632each and every predefined name within the current namespace. 633 634---------------------------------------- 63518 December 2013. Summary of changes for version 20131218: 636 637Global note: The ACPI 5.0A specification was released this month. There 638are no changes needed for ACPICA since this release of ACPI is an 639errata/clarification release. The specification is available at 640acpi.info. 641 642 6431) ACPICA kernel-resident subsystem: 644 645Added validation of the XSDT root table if it is present. Some older 646platforms contain an XSDT that is ill-formed or otherwise invalid (such 647as containing some or all entries that are NULL pointers). This change 648adds a new function to validate the XSDT before actually using it. If the 649XSDT is found to be invalid, ACPICA will now automatically fall back to 650using the RSDT instead. Original implementation by Zhao Yakui. Ported to 651ACPICA and enhanced by Lv Zheng and Bob Moore. 652 653Added a runtime option to ignore the XSDT and force the use of the RSDT. 654This change adds a runtime option that will force ACPICA to use the RSDT 655instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 656requires that an XSDT be used instead of the RSDT, the XSDT has been 657found to be corrupt or ill-formed on some machines. Lv Zheng. 658 659Added a runtime option to favor 32-bit FADT register addresses over the 66064-bit addresses. This change adds an option to favor 32-bit FADT 661addresses when there is a conflict between the 32-bit and 64-bit versions 662of the same register. The default behavior is to use the 64-bit version 663in accordance with the ACPI specification. This can now be overridden via 664the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 665 666During the change above, the internal "Convert FADT" and "Verify FADT" 667functions have been merged to simplify the code, making it easier to 668understand and maintain. ACPICA BZ 933. 669 670Improve exception reporting and handling for GPE block installation. 671Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 672status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 673 674Added helper macros to extract bus/segment numbers from the HEST table. 675This change adds two macros to extract the encoded bus and segment 676numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 677Betty Dall <betty.dall@hp.com> 678 679Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 680by ACPICA. It is not a public macro, so it should have no effect on 681existing OSV code. Lv Zheng. 682 683Example Code and Data Size: These are the sizes for the OS-independent 684acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 685debug version of the code includes the debug output trace mechanism and 686has a much larger code and data size. 687 688 Current Release: 689 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 690 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 691 Previous Release: 692 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 693 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 694 695 6962) iASL Compiler/Disassembler and Tools: 697 698Disassembler: Improved pathname support for emitted External() 699statements. This change adds full pathname support for external names 700that have been resolved internally by the inclusion of additional ACPI 701tables (via the iASL -e option). Without this change, the disassembler 702can emit multiple externals for the same object, or it become confused 703when the Scope() operator is used on an external object. Overall, greatly 704improves the ability to actually recompile the emitted ASL code when 705objects a referenced across multiple ACPI tables. Reported by Michael 706Tsirkin (mst@redhat.com). 707 708Tests/ASLTS: Updated functional control suite to execute with no errors. 709David Box. Fixed several errors related to the testing of the interpreter 710slack mode. Lv Zheng. 711 712iASL: Added support to detect names that are declared within a control 713method, but are unused (these are temporary names that are only valid 714during the time the method is executing). A remark is issued for these 715cases. ACPICA BZ 1022. 716 717iASL: Added full support for the DBG2 table. Adds full disassembler, 718table compiler, and template generator support for the DBG2 table (Debug 719Port 2 table). 720 721iASL: Added full support for the PCCT table, update the table definition. 722Updates the PCCT table definition in the actbl3.h header and adds table 723compiler and template generator support. 724 725iASL: Added an option to emit only error messages (no warnings/remarks). 726The -ve option will enable only error messages, warnings and remarks are 727suppressed. This can simplify debugging when only the errors are 728important, such as when an ACPI table is disassembled and there are many 729warnings and remarks -- but only the actual errors are of real interest. 730 731Example ACPICA code (source/tools/examples): Updated the example code so 732that it builds to an actual working program, not just example code. Added 733ACPI tables and execution of an example control method in the DSDT. Added 734makefile support for Unix generation. 735 736---------------------------------------- 73715 November 2013. Summary of changes for version 20131115: 738 739This release is available at https://acpica.org/downloads 740 741 7421) ACPICA kernel-resident subsystem: 743 744Resource Manager: Fixed loop termination for the "get AML length" 745function. The loop previously had an error termination on a NULL resource 746pointer, which can never happen since the loop simply increments a valid 747resource pointer. This fix changes the loop to terminate with an error on 748an invalid end-of-buffer condition. The problem can be seen as an 749infinite loop by callers to AcpiSetCurrentResources with an invalid or 750corrupted resource descriptor, or a resource descriptor that is missing 751an END_TAG descriptor. Reported by Dan Carpenter 752<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 753 754Table unload and ACPICA termination: Delete all attached data objects 755during namespace node deletion. This fix updates namespace node deletion 756to delete the entire list of attached objects (attached via 757AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 7581024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 759 760ACPICA termination: Added support to delete all objects attached to the 761root namespace node. This fix deletes any and all objects that have been 762attached to the root node via AcpiAttachData. Previously, none of these 763objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 764 765Debug output: Do not emit the function nesting level for the in-kernel 766build. The nesting level is really only useful during a single-thread 767execution. Therefore, only enable this output for the AcpiExec utility. 768Also, only emit the thread ID when executing under AcpiExec (Context 769switches are still always detected and a message is emitted). ACPICA BZ 770972. 771 772Example Code and Data Size: These are the sizes for the OS-independent 773acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 774debug version of the code includes the debug output trace mechanism and 775has a much larger code and data size. 776 777 Current Release: 778 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 779 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 780 Previous Release: 781 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 782 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 783 784 7852) iASL Compiler/Disassembler and Tools: 786 787AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 788correct portable POSIX header for terminal control functions. 789 790Disassembler: Fixed control method invocation issues related to the use 791of the CondRefOf() operator. The problem is seen in the disassembly where 792control method invocations may not be disassembled properly if the 793control method name has been used previously as an argument to CondRefOf. 794The solution is to not attempt to emit an external declaration for the 795CondRefOf target (it is not necessary in the first place). This prevents 796disassembler object type confusion. ACPICA BZ 988. 797 798Unix Makefiles: Added an option to disable compiler optimizations and the 799_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 800with optimizations (reportedly, gcc 4.4 for example). This change adds a 801command line option for make (NOOPT) that disables all compiler 802optimizations and the _FORTIFY_SOURCE compiler flag. The default 803optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 8041034. Lv Zheng, Bob Moore. 805 806Tests/ASLTS: Added options to specify individual test cases and modes. 807This allows testers running aslts.sh to optionally specify individual 808test modes and test cases. Also added an option to disable the forced 809generation of the ACPICA tools from source if desired. Lv Zheng. 810 811---------------------------------------- 81227 September 2013. Summary of changes for version 20130927: 813 814This release is available at https://acpica.org/downloads 815 816 8171) ACPICA kernel-resident subsystem: 818 819Fixed a problem with store operations to reference objects. This change 820fixes a problem where a Store operation to an ArgX object that contained 821a 822reference to a field object did not complete the automatic dereference 823and 824then write to the actual field object. Instead, the object type of the 825field object was inadvertently changed to match the type of the source 826operand. The new behavior will actually write to the field object (buffer 827field or field unit), thus matching the correct ACPI-defined behavior. 828 829Implemented support to allow the host to redefine individual OSL 830prototypes. This change enables the host to redefine OSL prototypes found 831in the acpiosxf.h file. This allows the host to implement OSL interfaces 832with a macro or inlined function. Further, it allows the host to add any 833additional required modifiers such as __iomem, __init, __exit, etc., as 834necessary on a per-interface basis. Enables maximum flexibility for the 835OSL interfaces. Lv Zheng. 836 837Hardcoded the access width for the FADT-defined reset register. The ACPI 838specification requires the reset register width to be 8 bits. ACPICA now 839hardcodes the width to 8 and ignores the FADT width value. This provides 840compatibility with other ACPI implementations that have allowed BIOS code 841with bad register width values to go unnoticed. Matthew Garett, Bob 842Moore, 843Lv Zheng. 844 845Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 846used 847in the OSL header (acpiosxf). The change modifies the position of this 848macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 849build issues if the OSL defines the implementation of the interface to be 850an inline stub function. Lv Zheng. 851 852Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 853initialization interfaces. This change adds a new macro for the main init 854and terminate external interfaces in order to support hosts that require 855additional or different processing for these functions. Changed from 856ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 857Zheng, Bob Moore. 858 859Cleaned up the memory allocation macros for configurability. In the 860common 861case, the ACPI_ALLOCATE and related macros now resolve directly to their 862respective AcpiOs* OSL interfaces. Two options: 8631) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 864default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 8652) For AcpiExec (and for debugging), the macros can optionally be 866resolved 867to the local ACPICA interfaces that track each allocation (local tracking 868is used to immediately detect memory leaks). 869Lv Zheng. 870 871Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 872to predefine this macro to either TRUE or FALSE during the system build. 873 874Replaced __FUNCTION_ with __func__ in the gcc-specific header. 875 876Example Code and Data Size: These are the sizes for the OS-independent 877acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 878debug version of the code includes the debug output trace mechanism and 879has a much larger code and data size. 880 881 Current Release: 882 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 883 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 884 Previous Release: 885 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 886 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 887 888 8892) iASL Compiler/Disassembler and Tools: 890 891iASL: Implemented wildcard support for the -e option. This simplifies use 892when there are many SSDTs that must be included to resolve external 893method 894declarations. ACPICA BZ 1041. Example: 895 iasl -e ssdt*.dat -d dsdt.dat 896 897AcpiExec: Add history/line-editing for Unix/Linux systems. This change 898adds a portable module that implements full history and limited line 899editing for Unix and Linux systems. It does not use readline() due to 900portability issues. Instead it uses the POSIX termio interface to put the 901terminal in raw input mode so that the various special keys can be 902trapped 903(such as up/down-arrow for history support and left/right-arrow for line 904editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 905 906AcpiXtract: Add support to handle (ignore) "empty" lines containing only 907one or more spaces. This provides compatible with early or different 908versions of the AcpiDump utility. ACPICA BZ 1044. 909 910AcpiDump: Do not ignore tables that contain only an ACPI table header. 911Apparently, some BIOSs create SSDTs that contain an ACPI table header but 912no other data. This change adds support to dump these tables. Any tables 913shorter than the length of an ACPI table header remain in error (an error 914message is emitted). Reported by Yi Li. 915 916Debugger: Echo actual command along with the "unknown command" message. 917 918---------------------------------------- 91923 August 2013. Summary of changes for version 20130823: 920 9211) ACPICA kernel-resident subsystem: 922 923Implemented support for host-installed System Control Interrupt (SCI) 924handlers. Certain ACPI functionality requires the host to handle raw 925SCIs. For example, the "SCI Doorbell" that is defined for memory power 926state support requires the host device driver to handle SCIs to examine 927if the doorbell has been activated. Multiple SCI handlers can be 928installed to allow for future expansion. New external interfaces are 929AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 930details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 931 932Operation region support: Never locally free the handler "context" 933pointer. This change removes some dangerous code that attempts to free 934the handler context pointer in some (rare) circumstances. The owner of 935the handler owns this pointer and the ACPICA code should never touch it. 936Although not seen to be an issue in any kernel, it did show up as a 937problem (fault) under AcpiExec. Also, set the internal storage field for 938the context pointer to zero when the region is deactivated, simply for 939sanity. David Box. ACPICA BZ 1039. 940 941AcpiRead: On error, do not modify the return value target location. If an 942error happens in the middle of a split 32/32 64-bit I/O operation, do not 943modify the target of the return value pointer. Makes the code consistent 944with the rest of ACPICA. Bjorn Helgaas. 945 946Example Code and Data Size: These are the sizes for the OS-independent 947acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 948debug version of the code includes the debug output trace mechanism and 949has a much larger code and data size. 950 951 Current Release: 952 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 953 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 954 Previous Release: 955 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 956 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 957 958 9592) iASL Compiler/Disassembler and Tools: 960 961AcpiDump: Implemented several new features and fixed some problems: 9621) Added support to dump the RSDP, RSDT, and XSDT tables. 9632) Added support for multiple table instances (SSDT, UEFI). 9643) Added option to dump "customized" (overridden) tables (-c). 9654) Fixed a problem where some table filenames were improperly 966constructed. 9675) Improved some error messages, removed some unnecessary messages. 968 969iASL: Implemented additional support for disassembly of ACPI tables that 970contain invocations of external control methods. The -fe<file> option 971allows the import of a file that specifies the external methods along 972with the required number of arguments for each -- allowing for the 973correct disassembly of the table. This is a workaround for a limitation 974of AML code where the disassembler often cannot determine the number of 975arguments required for an external control method and generates incorrect 976ASL code. See the iASL reference for details. ACPICA BZ 1030. 977 978Debugger: Implemented a new command (paths) that displays the full 979pathnames (namepaths) and object types of all objects in the namespace. 980This is an alternative to the namespace command. 981 982Debugger: Implemented a new command (sci) that invokes the SCI dispatch 983mechanism and any installed handlers. 984 985iASL: Fixed a possible segfault for "too many parent prefixes" condition. 986This can occur if there are too many parent prefixes in a namepath (for 987example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 988 989Application OSLs: Set the return value for the PCI read functions. These 990functions simply return AE_OK, but should set the return value to zero 991also. This change implements this. ACPICA BZ 1038. 992 993Debugger: Prevent possible command line buffer overflow. Increase the 994size of a couple of the debugger line buffers, and ensure that overflow 995cannot happen. ACPICA BZ 1037. 996 997iASL: Changed to abort immediately on serious errors during the parsing 998phase. Due to the nature of ASL, there is no point in attempting to 999compile these types of errors, and they typically end up causing a 1000cascade of hundreds of errors which obscure the original problem. 1001 1002---------------------------------------- 100325 July 2013. Summary of changes for version 20130725: 1004 10051) ACPICA kernel-resident subsystem: 1006 1007Fixed a problem with the DerefOf operator where references to FieldUnits 1008and BufferFields incorrectly returned the parent object, not the actual 1009value of the object. After this change, a dereference of a FieldUnit 1010reference results in a read operation on the field to get the value, and 1011likewise, the appropriate BufferField value is extracted from the target 1012buffer. 1013 1014Fixed a problem where the _WAK method could cause a fault under these 1015circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 1016method returned no value. The problem is rarely seen because most kernels 1017run ACPICA in slack mode. 1018 1019For the DerefOf operator, a fatal error now results if an attempt is made 1020to dereference a reference (created by the Index operator) to a NULL 1021package element. Provides compatibility with other ACPI implementations, 1022and this behavior will be added to a future version of the ACPI 1023specification. 1024 1025The ACPI Power Management Timer (defined in the FADT) is now optional. 1026This provides compatibility with other ACPI implementations and will 1027appear in the next version of the ACPI specification. If there is no PM 1028Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 1029zero in the FADT indicates no PM timer. 1030 1031Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 1032allows the host to globally enable/disable all vendor strings, all 1033feature strings, or both. Intended to be primarily used for debugging 1034purposes only. Lv Zheng. 1035 1036Expose the collected _OSI data to the host via a global variable. This 1037data tracks the highest level vendor ID that has been invoked by the BIOS 1038so that the host (and potentially ACPICA itself) can change behaviors 1039based upon the age of the BIOS. 1040 1041Example Code and Data Size: These are the sizes for the OS-independent 1042acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1043debug version of the code includes the debug output trace mechanism and 1044has a much larger code and data size. 1045 1046 Current Release: 1047 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1048 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1049 Previous Release: 1050 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1051 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1052 1053 10542) iASL Compiler/Disassembler and Tools: 1055 1056iASL: Created the following enhancements for the -so option (create 1057offset table): 10581)Add offsets for the last nameseg in each namepath for every supported 1059object type 10602)Add support for Processor, Device, Thermal Zone, and Scope objects 10613)Add the actual AML opcode for the parent object of every supported 1062object type 10634)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 1064 1065Disassembler: Emit all unresolved external symbols in a single block. 1066These are external references to control methods that could not be 1067resolved, and thus, the disassembler had to make a guess at the number of 1068arguments to parse. 1069 1070iASL: The argument to the -T option (create table template) is now 1071optional. If not specified, the default table is a DSDT, typically the 1072most common case. 1073 1074---------------------------------------- 107526 June 2013. Summary of changes for version 20130626: 1076 10771) ACPICA kernel-resident subsystem: 1078 1079Fixed an issue with runtime repair of the _CST object. Null or invalid 1080elements were not always removed properly. Lv Zheng. 1081 1082Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 1083FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 1084the maximum number of GPEs is 1016. Use of multiple GPE block devices 1085makes the system-wide number of GPEs essentially unlimited. 1086 1087Example Code and Data Size: These are the sizes for the OS-independent 1088acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1089debug version of the code includes the debug output trace mechanism and 1090has a much larger code and data size. 1091 1092 Current Release: 1093 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1094 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1095 Previous Release: 1096 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1097 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1098 1099 11002) iASL Compiler/Disassembler and Tools: 1101 1102Portable AcpiDump: Implemented full support for the Linux and FreeBSD 1103hosts. Now supports Linux, FreeBSD, and Windows. 1104 1105Disassembler: Added some missing types for the HEST and EINJ tables: "Set 1106Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 1107 1108iASL/Preprocessor: Implemented full support for nested 1109#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 1110 1111Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 1112max. The original purpose of this constraint was to limit the amount of 1113debug output. However, the string function in question (UtPrintString) is 1114now used for the disassembler also, where 256 bytes is insufficient. 1115Reported by RehabMan@GitHub. 1116 1117iASL/DataTables: Fixed some problems and issues with compilation of DMAR 1118tables. ACPICA BZ 999. Lv Zheng. 1119 1120iASL: Fixed a couple of error exit issues that could result in a "Could 1121not delete <file>" message during ASL compilation. 1122 1123AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 1124the actual signatures for these tables are "FACP" and "APIC", 1125respectively. 1126 1127AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 1128tables are allowed to have multiple instances. 1129 1130---------------------------------------- 113117 May 2013. Summary of changes for version 20130517: 1132 11331) ACPICA kernel-resident subsystem: 1134 1135Fixed a regression introduced in version 20130328 for _INI methods. This 1136change fixes a problem introduced in 20130328 where _INI methods are no 1137longer executed properly because of a memory block that was not 1138initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 1139<tomasz.nowicki@linaro.org>. 1140 1141Fixed a possible problem with the new extended sleep registers in the 1142ACPI 11435.0 FADT. Do not use these registers (even if populated) unless the HW- 1144reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 11451020. Lv Zheng. 1146 1147Implemented return value repair code for _CST predefined objects: Sort 1148the 1149list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 1150 1151Implemented a debug-only option to disable loading of SSDTs from the 1152RSDT/XSDT during ACPICA initialization. This can be useful for debugging 1153ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 1154acglobal.h - ACPICA BZ 1005. Lv Zheng. 1155 1156Fixed some issues in the ACPICA initialization and termination code: 1157Tomasz Nowicki <tomasz.nowicki@linaro.org> 11581) Clear events initialized flag upon event component termination. ACPICA 1159BZ 1013. 11602) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 11613) Delete global lock pending lock during termination. ACPICA BZ 1012. 11624) Clear debug buffer global on termination to prevent possible multiple 1163delete. ACPICA BZ 1010. 1164 1165Standardized all switch() blocks across the entire source base. After 1166many 1167years, different formatting for switch() had crept in. This change makes 1168the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 1169 1170Split some files to enhance ACPICA modularity and configurability: 11711) Split buffer dump routines into utilities/utbuffer.c 11722) Split internal error message routines into utilities/uterror.c 11733) Split table print utilities into tables/tbprint.c 11744) Split iASL command-line option processing into asloptions.c 1175 1176Makefile enhancements: 11771) Support for all new files above. 11782) Abort make on errors from any subcomponent. Chao Guan. 11793) Add build support for Apple Mac OS X. Liang Qi. 1180 1181Example Code and Data Size: These are the sizes for the OS-independent 1182acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1183debug version of the code includes the debug output trace mechanism and 1184has a much larger code and data size. 1185 1186 Current Release: 1187 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1188 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1189 Previous Release: 1190 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1191 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1192 1193 11942) iASL Compiler/Disassembler and Tools: 1195 1196New utility: Implemented an easily portable version of the acpidump 1197utility to extract ACPI tables from the system (or a file) in an ASCII 1198hex 1199dump format. The top-level code implements the various command line 1200options, file I/O, and table dump routines. To port to a new host, only 1201three functions need to be implemented to get tables -- since this 1202functionality is OS-dependent. See the tools/acpidump/apmain.c module and 1203the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 12041) The Windows version obtains the ACPI tables from the Registry. 12052) The Linux version is under development. 12063) Other hosts - If an OS-dependent module is submitted, it will be 1207distributed with ACPICA. 1208 1209iASL: Fixed a regression for -D preprocessor option (define symbol). A 1210restructuring/change to the initialization sequence caused this option to 1211no longer work properly. 1212 1213iASL: Implemented a mechanism to disable specific warnings and remarks. 1214Adds a new command line option, "-vw <messageid> as well as "#pragma 1215disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 1216 1217iASL: Fix for too-strict package object validation. The package object 1218validation for return values from the predefined names is a bit too 1219strict, it does not allow names references within the package (which will 1220be resolved at runtime.) These types of references cannot be validated at 1221compile time. This change ignores named references within package objects 1222for names that return or define static packages. 1223 1224Debugger: Fixed the 80-character command line limitation for the History 1225command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 1226 1227iASL: Added control method and package support for the -so option 1228(generates AML offset table for BIOS support.) 1229 1230iASL: issue a remark if a non-serialized method creates named objects. If 1231a thread blocks within the method for any reason, and another thread 1232enters the method, the method will fail because an attempt will be made 1233to 1234create the same (named) object twice. In this case, issue a remark that 1235the method should be marked serialized. NOTE: may become a warning later. 1236ACPICA BZ 909. 1237 1238---------------------------------------- 123918 April 2013. Summary of changes for version 20130418: 1240 12411) ACPICA kernel-resident subsystem: 1242 1243Fixed a possible buffer overrun during some rare but specific field unit 1244read operations. This overrun can only happen if the DSDT version is 1 -- 1245meaning that all AML integers are 32 bits -- and the field length is 1246between 33 and 55 bits long. During the read, an internal buffer object 1247is 1248created for the field unit because the field is larger than an integer 1249(32 1250bits). However, in this case, the buffer will be incorrectly written 1251beyond the end because the buffer length is less than the internal 1252minimum 1253of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 1254long, but a full 8 bytes will be written. 1255 1256Updated the Embedded Controller "orphan" _REG method support. This refers 1257to _REG methods under the EC device that have no corresponding operation 1258region. This is allowed by the ACPI specification. This update removes a 1259dependency on the existence an ECDT table. It will execute an orphan _REG 1260method as long as the operation region handler for the EC is installed at 1261the EC device node and not the namespace root. Rui Zhang (original 1262update), Bob Moore (update/integrate). 1263 1264Implemented run-time argument typechecking for all predefined ACPI names 1265(_STA, _BIF, etc.) This change performs object typechecking on all 1266incoming arguments for all predefined names executed via 1267AcpiEvaluateObject. This ensures that ACPI-related device drivers are 1268passing correct object types as well as the correct number of arguments 1269(therefore identifying any issues immediately). Also, the ASL/namespace 1270definition of the predefined name is checked against the ACPI 1271specification for the proper argument count. Adds one new file, 1272nsarguments.c 1273 1274Changed an exception code for the ASL UnLoad() operator. Changed the 1275exception code for the case where the input DdbHandle is invalid, from 1276AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 1277 1278Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 1279global makefile. The use of this flag causes compiler errors on earlier 1280versions of GCC, so it has been removed for compatibility. 1281 1282Miscellaneous cleanup: 12831) Removed some unused/obsolete macros 12842) Fixed a possible memory leak in the _OSI support 12853) Removed an unused variable in the predefined name support 12864) Windows OSL: remove obsolete reference to a memory list field 1287 1288Example Code and Data Size: These are the sizes for the OS-independent 1289acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1290debug version of the code includes the debug output trace mechanism and 1291has a much larger code and data size. 1292 1293 Current Release: 1294 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1295 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1296 Previous Release: 1297 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 1298 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 1299 1300 13012) iASL Compiler/Disassembler and Tools: 1302 1303AcpiExec: Added installation of a handler for the SystemCMOS address 1304space. This prevents control method abort if a method accesses this 1305space. 1306 1307AcpiExec: Added support for multiple EC devices, and now install EC 1308operation region handler(s) at the actual EC device instead of the 1309namespace root. This reflects the typical behavior of host operating 1310systems. 1311 1312AcpiExec: Updated to ensure that all operation region handlers are 1313installed before the _REG methods are executed. This prevents a _REG 1314method from aborting if it accesses an address space has no handler. 1315AcpiExec installs a handler for every possible address space. 1316 1317Debugger: Enhanced the "handlers" command to display non-root handlers. 1318This change enhances the handlers command to display handlers associated 1319with individual devices throughout the namespace, in addition to the 1320currently supported display of handlers associated with the root 1321namespace 1322node. 1323 1324ASL Test Suite: Several test suite errors have been identified and 1325resolved, reducing the total error count during execution. Chao Guan. 1326 1327---------------------------------------- 132828 March 2013. Summary of changes for version 20130328: 1329 13301) ACPICA kernel-resident subsystem: 1331 1332Fixed several possible race conditions with the internal object reference 1333counting mechanism. Some of the external ACPICA interfaces update object 1334reference counts without holding the interpreter or namespace lock. This 1335change adds a spinlock to protect reference count updates on the internal 1336ACPICA objects. Reported by and with assistance from Andriy Gapon 1337(avg@FreeBSD.org). 1338 1339FADT support: Removed an extraneous warning for very large GPE register 1340sets. This change removes a size mismatch warning if the legacy length 1341field for a GPE register set is larger than the 64-bit GAS structure can 1342accommodate. GPE register sets can be larger than the 255-bit width 1343limitation of the GAS structure. Linn Crosetto (linn@hp.com). 1344 1345_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 1346return from this interface. Handles a possible timeout case if 1347ACPI_WAIT_FOREVER is modified by the host to be a value less than 1348"forever". Jung-uk Kim. 1349 1350Predefined name support: Add allowed/required argument type information 1351to 1352the master predefined info table. This change adds the infrastructure to 1353enable typechecking on incoming arguments for all predefined 1354methods/objects. It does not actually contain the code that will fully 1355utilize this information, this is still under development. Also condenses 1356some duplicate code for the predefined names into a new module, 1357utilities/utpredef.c 1358 1359Example Code and Data Size: These are the sizes for the OS-independent 1360acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1361debug version of the code includes the debug output trace mechanism and 1362has a much larger code and data size. 1363 1364 Previous Release: 1365 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1366 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1367 Current Release: 1368 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1369 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1370 1371 13722) iASL Compiler/Disassembler and Tools: 1373 1374iASL: Implemented a new option to simplify the development of ACPI- 1375related 1376BIOS code. Adds support for a new "offset table" output file. The -so 1377option will create a C table containing the AML table offsets of various 1378named objects in the namespace so that BIOS code can modify them easily 1379at 1380boot time. This can simplify BIOS runtime code by eliminating expensive 1381searches for "magic values", enhancing boot times and adding greater 1382reliability. With assistance from Lee Hamel. 1383 1384iASL: Allow additional predefined names to return zero-length packages. 1385Now, all predefined names that are defined by the ACPI specification to 1386return a "variable-length package of packages" are allowed to return a 1387zero length top-level package. This allows the BIOS to tell the host that 1388the requested feature is not supported, and supports existing BIOS/ASL 1389code and practices. 1390 1391iASL: Changed the "result not used" warning to an error. This is the case 1392where an ASL operator is effectively a NOOP because the result of the 1393operation is not stored anywhere. For example: 1394 Add (4, Local0) 1395There is no target (missing 3rd argument), nor is the function return 1396value used. This is potentially a very serious problem -- since the code 1397was probably intended to do something, but for whatever reason, the value 1398was not stored. Therefore, this issue has been upgraded from a warning to 1399an error. 1400 1401AcpiHelp: Added allowable/required argument types to the predefined names 1402info display. This feature utilizes the recent update to the predefined 1403names table (above). 1404 1405---------------------------------------- 140614 February 2013. Summary of changes for version 20130214: 1407 14081) ACPICA Kernel-resident Subsystem: 1409 1410Fixed a possible regression on some hosts: Reinstated the safe return 1411macros (return_ACPI_STATUS, etc.) that ensure that the argument is 1412evaluated only once. Although these macros are not needed for the ACPICA 1413code itself, they are often used by ACPI-related host device drivers 1414where 1415the safe feature may be necessary. 1416 1417Fixed several issues related to the ACPI 5.0 reduced hardware support 1418(SOC): Now ensure that if the platform declares itself as hardware- 1419reduced 1420via the FADT, the following functions become NOOPs (and always return 1421AE_OK) because ACPI is always enabled by definition on these machines: 1422 AcpiEnable 1423 AcpiDisable 1424 AcpiHwGetMode 1425 AcpiHwSetMode 1426 1427Dynamic Object Repair: Implemented additional runtime repairs for 1428predefined name return values. Both of these repairs can simplify code in 1429the related device drivers that invoke these methods: 14301) For the _STR and _MLS names, automatically repair/convert an ASCII 1431string to a Unicode buffer. 14322) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 1433a 1434lone end tag descriptor in the following cases: A Return(0) was executed, 1435a null buffer was returned, or no object at all was returned (non-slack 1436mode only). Adds a new file, nsconvert.c 1437ACPICA BZ 998. Bob Moore, Lv Zheng. 1438 1439Resource Manager: Added additional code to prevent possible infinite 1440loops 1441while traversing corrupted or ill-formed resource template buffers. Check 1442for zero-length resource descriptors in all code that loops through 1443resource templates (the length field is used to index through the 1444template). This change also hardens the external AcpiWalkResources and 1445AcpiWalkResourceBuffer interfaces. 1446 1447Local Cache Manager: Enhanced the main data structure to eliminate an 1448unnecessary mechanism to access the next object in the list. Actually 1449provides a small performance enhancement for hosts that use the local 1450ACPICA cache manager. Jung-uk Kim. 1451 1452Example Code and Data Size: These are the sizes for the OS-independent 1453acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1454debug version of the code includes the debug output trace mechanism and 1455has a much larger code and data size. 1456 1457 Previous Release: 1458 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1459 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1460 Current Release: 1461 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1462 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1463 1464 14652) iASL Compiler/Disassembler and Tools: 1466 1467iASL/Disassembler: Fixed several issues with the definition of the ACPI 14685.0 RASF table (RAS Feature Table). This change incorporates late changes 1469that were made to the ACPI 5.0 specification. 1470 1471iASL/Disassembler: Added full support for the following new ACPI tables: 1472 1) The MTMR table (MID Timer Table) 1473 2) The VRTC table (Virtual Real Time Clock Table). 1474Includes header file, disassembler, table compiler, and template support 1475for both tables. 1476 1477iASL: Implemented compile-time validation of package objects returned by 1478predefined names. This new feature validates static package objects 1479returned by the various predefined names defined to return packages. Both 1480object types and package lengths are validated, for both parent packages 1481and sub-packages, if any. The code is similar in structure and behavior 1482to 1483the runtime repair mechanism within the AML interpreter and uses the 1484existing predefined name information table. Adds a new file, aslprepkg.c. 1485ACPICA BZ 938. 1486 1487iASL: Implemented auto-detection of binary ACPI tables for disassembly. 1488This feature detects a binary file with a valid ACPI table header and 1489invokes the disassembler automatically. Eliminates the need to 1490specifically invoke the disassembler with the -d option. ACPICA BZ 862. 1491 1492iASL/Disassembler: Added several warnings for the case where there are 1493unresolved control methods during the disassembly. This can potentially 1494cause errors when the output file is compiled, because the disassembler 1495assumes zero method arguments in these cases (it cannot determine the 1496actual number of arguments without resolution/definition of the method). 1497 1498Debugger: Added support to display all resources with a single command. 1499Invocation of the resources command with no arguments will now display 1500all 1501resources within the current namespace. 1502 1503AcpiHelp: Added descriptive text for each ACPICA exception code displayed 1504via the -e option. 1505 1506---------------------------------------- 150717 January 2013. Summary of changes for version 20130117: 1508 15091) ACPICA Kernel-resident Subsystem: 1510 1511Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 1512return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 1513objects to return a package containing one integer, most BIOS code 1514returns 1515two integers and the previous code reflects that. However, we also need 1516to 1517support BIOS code that actually implements to the ACPI spec, and this 1518change reflects this. 1519 1520Fixed two issues with the ACPI_DEBUG_PRINT macros: 15211) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 1522C compilers that require this support. 15232) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 1524ACPI_DEBUG is already used by many of the various hosts. 1525 1526Updated all ACPICA copyrights and signons to 2013. Added the 2013 1527copyright to all module headers and signons, including the standard Linux 1528header. This affects virtually every file in the ACPICA core subsystem, 1529iASL compiler, all ACPICA utilities, and the test suites. 1530 1531Example Code and Data Size: These are the sizes for the OS-independent 1532acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1533debug version of the code includes the debug output trace mechanism and 1534has a much larger code and data size. 1535 1536 Previous Release: 1537 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1538 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1539 Current Release: 1540 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1541 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1542 1543 15442) iASL Compiler/Disassembler and Tools: 1545 1546Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 1547prevent a possible fault on some hosts. Some C libraries modify the arg 1548pointer parameter to vfprintf making it difficult to call it twice in the 1549AcpiOsVprintf function. Use a local buffer to workaround this issue. This 1550does not affect the Windows OSL since the Win C library does not modify 1551the arg pointer. Chao Guan, Bob Moore. 1552 1553iASL: Fixed a possible infinite loop when the maximum error count is 1554reached. If an output file other than the .AML file is specified (such as 1555a listing file), and the maximum number of errors is reached, do not 1556attempt to flush data to the output file(s) as the compiler is aborting. 1557This can cause an infinite loop as the max error count code essentially 1558keeps calling itself. 1559 1560iASL/Disassembler: Added an option (-in) to ignore NOOP 1561opcodes/operators. 1562Implemented for both the compiler and the disassembler. Often, the NOOP 1563opcode is used as padding for packages that are changed dynamically by 1564the 1565BIOS. When disassembled and recompiled, these NOOPs will cause syntax 1566errors. This option causes the disassembler to ignore all NOOP opcodes 1567(0xA3), and it also causes the compiler to ignore all ASL source code 1568NOOP 1569statements as well. 1570 1571Debugger: Enhanced the Sleep command to execute all sleep states. This 1572change allows Sleep to be invoked with no arguments and causes the 1573debugger to execute all of the sleep states, 0-5, automatically. 1574 1575---------------------------------------- 157620 December 2012. Summary of changes for version 20121220: 1577 15781) ACPICA Kernel-resident Subsystem: 1579 1580Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 1581alternate entry point for AcpiWalkResources and improves the usability of 1582the resource manager by accepting as input a buffer containing the output 1583of either a _CRS, _PRS, or _AEI method. The key functionality is that the 1584input buffer is not deleted by this interface so that it can be used by 1585the host later. See the ACPICA reference for details. 1586 1587Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 1588(DSDT version < 2). The constant will be truncated and this warning 1589reflects that behavior. 1590 1591Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 1592ExtendedInterrupt, and GpioInt descriptors. This change adds support to 1593both get and set the new wake bit in these descriptors, separately from 1594the existing share bit. Reported by Aaron Lu. 1595 1596Interpreter: Fix Store() when an implicit conversion is not possible. For 1597example, in the cases such as a store of a string to an existing package 1598object, implement the store as a CopyObject(). This is a small departure 1599from the ACPI specification which states that the control method should 1600be 1601aborted in this case. However, the ASLTS suite depends on this behavior. 1602 1603Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 1604macros: check if debug output is currently enabled as soon as possible to 1605minimize performance impact if debug is in fact not enabled. 1606 1607Source code restructuring: Cleanup to improve modularity. The following 1608new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 1609psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 1610Associated makefiles and project files have been updated. 1611 1612Changed an exception code for LoadTable operator. For the case where one 1613of the input strings is too long, change the returned exception code from 1614AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 1615 1616Fixed a possible memory leak in dispatcher error path. On error, delete 1617the mutex object created during method mutex creation. Reported by 1618tim.gardner@canonical.com. 1619 1620Example Code and Data Size: These are the sizes for the OS-independent 1621acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1622debug version of the code includes the debug output trace mechanism and 1623has a much larger code and data size. 1624 1625 Previous Release: 1626 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1627 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1628 Current Release: 1629 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1630 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1631 1632 16332) iASL Compiler/Disassembler and Tools: 1634 1635iASL: Disallow a method call as argument to the ObjectType ASL operator. 1636This change tracks an errata to the ACPI 5.0 document. The AML grammar 1637will not allow the interpreter to differentiate between a method and a 1638method invocation when these are used as an argument to the ObjectType 1639operator. The ACPI specification change is to disallow a method 1640invocation 1641(UserTerm) for the ObjectType operator. 1642 1643Finish support for the TPM2 and CSRT tables in the headers, table 1644compiler, and disassembler. 1645 1646Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 1647always expires immediately if the semaphore is not available. The 1648original 1649code was using a relative-time timeout, but sem_timedwait requires the 1650use 1651of an absolute time. 1652 1653iASL: Added a remark if the Timer() operator is used within a 32-bit 1654table. This operator returns a 64-bit time value that will be truncated 1655within a 32-bit table. 1656 1657iASL Source code restructuring: Cleanup to improve modularity. The 1658following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 1659aslmethod.c, and aslfileio.c. Associated makefiles and project files have 1660been updated. 1661 1662 1663---------------------------------------- 166414 November 2012. Summary of changes for version 20121114: 1665 16661) ACPICA Kernel-resident Subsystem: 1667 1668Implemented a performance enhancement for ACPI/AML Package objects. This 1669change greatly increases the performance of Package objects within the 1670interpreter. It changes the processing of reference counts for packages 1671by 1672optimizing for the most common case where the package sub-objects are 1673either Integers, Strings, or Buffers. Increases the overall performance 1674of 1675the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 16762X.) 1677Chao Guan. ACPICA BZ 943. 1678 1679Implemented and deployed common macros to extract flag bits from resource 1680descriptors. Improves readability and maintainability of the code. Fixes 1681a 1682problem with the UART serial bus descriptor for the number of data bits 1683flags (was incorrectly 2 bits, should be 3). 1684 1685Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 1686of the macros and changed the SETx macros to the style of (destination, 1687source). Also added ACPI_CASTx companion macros. Lv Zheng. 1688 1689Example Code and Data Size: These are the sizes for the OS-independent 1690acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1691debug version of the code includes the debug output trace mechanism and 1692has a much larger code and data size. 1693 1694 Previous Release: 1695 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 1696 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1697 Current Release: 1698 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1699 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1700 1701 17022) iASL Compiler/Disassembler and Tools: 1703 1704Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 1705adds the ShareAndWake and ExclusiveAndWake flags which were added to the 1706Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 1707 1708Disassembler: Fixed a problem with external declaration generation. Fixes 1709a problem where an incorrect pathname could be generated for an external 1710declaration if the original reference to the object includes leading 1711carats (^). ACPICA BZ 984. 1712 1713Debugger: Completed a major update for the Disassemble<method> command. 1714This command was out-of-date and did not properly disassemble control 1715methods that had any reasonable complexity. This fix brings the command 1716up 1717to the same level as the rest of the disassembler. Adds one new file, 1718dmdeferred.c, which is existing code that is now common with the main 1719disassembler and the debugger disassemble command. ACPICA MZ 978. 1720 1721iASL: Moved the parser entry prototype to avoid a duplicate declaration. 1722Newer versions of Bison emit this prototype, so moved the prototype out 1723of 1724the iASL header to where it is actually used in order to avoid a 1725duplicate 1726declaration. 1727 1728iASL/Tools: Standardized use of the stream I/O functions: 1729 1) Ensure check for I/O error after every fopen/fread/fwrite 1730 2) Ensure proper order of size/count arguments for fread/fwrite 1731 3) Use test of (Actual != Requested) after all fwrite, and most fread 1732 4) Standardize I/O error messages 1733Improves reliability and maintainability of the code. Bob Moore, Lv 1734Zheng. 1735ACPICA BZ 981. 1736 1737Disassembler: Prevent duplicate External() statements. During generation 1738of external statements, detect similar pathnames that are actually 1739duplicates such as these: 1740 External (\ABCD) 1741 External (ABCD) 1742Remove all leading '\' characters from pathnames during the external 1743statement generation so that duplicates will be detected and tossed. 1744ACPICA BZ 985. 1745 1746Tools: Replace low-level I/O with stream I/O functions. Replace 1747open/read/write/close with the stream I/O equivalents 1748fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 1749Moore. 1750 1751AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 1752name header so that AcpiXtract recognizes the output file/table. 1753 1754iASL: Remove obsolete -2 option flag. Originally intended to force the 1755compiler/disassembler into an ACPI 2.0 mode, this was never implemented 1756and the entire concept is now obsolete. 1757 1758---------------------------------------- 175918 October 2012. Summary of changes for version 20121018: 1760 1761 17621) ACPICA Kernel-resident Subsystem: 1763 1764Updated support for the ACPI 5.0 MPST table. Fixes some problems 1765introduced by late changes to the table as it was added to the ACPI 5.0 1766specification. Includes header, disassembler, and data table compiler 1767support as well as a new version of the MPST template. 1768 1769AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 17705.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 1771methods: _HID, _CID, and _UID. 1772 1773Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 1774ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 1775name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 1776names for their various drivers. Affects the AcpiGetObjectInfo external 1777interface, and other internal interfaces as well. 1778 1779Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 1780This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 1781on machines that support non-aligned transfers. Optimizes for this case 1782rather than using a strncpy. With assistance from Zheng Lv. 1783 1784Resource Manager: Small fix for buffer size calculation. Fixed a one byte 1785error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 1786 1787Added a new debug print message for AML mutex objects that are force- 1788released. At control method termination, any currently acquired mutex 1789objects are force-released. Adds a new debug-only message for each one 1790that is released. 1791 1792Audited/updated all ACPICA return macros and the function debug depth 1793counter: 1) Ensure that all functions that use the various TRACE macros 1794also use the appropriate ACPICA return macros. 2) Ensure that all normal 1795return statements surround the return expression (value) with parens to 1796ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 1797Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 1798 1799Global source code changes/maintenance: All extra lines at the start and 1800end of each source file have been removed for consistency. Also, within 1801comments, all new sentences start with a single space instead of a double 1802space, again for consistency across the code base. 1803 1804Example Code and Data Size: These are the sizes for the OS-independent 1805acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1806debug version of the code includes the debug output trace mechanism and 1807has a much larger code and data size. 1808 1809 Previous Release: 1810 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 1811 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 1812 Current Release: 1813 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 1814 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1815 1816 18172) iASL Compiler/Disassembler and Tools: 1818 1819AcpiExec: Improved the algorithm used for memory leak/corruption 1820detection. Added some intelligence to the code that maintains the global 1821list of allocated memory. The list is now ordered by allocated memory 1822address, significantly improving performance. When running AcpiExec on 1823the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 1824on the platform and/or the environment. Note, this performance 1825enhancement affects the AcpiExec utility only, not the kernel-resident 1826ACPICA code. 1827 1828Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 1829the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 1830incorrect table offset reported for invalid opcodes. Report the original 183132-bit value for bad ACPI_NAMEs (as well as the repaired name.) 1832 1833Disassembler: Enhanced the -vt option to emit the binary table data in 1834hex format to assist with debugging. 1835 1836Fixed a potential filename buffer overflow in osunixdir.c. Increased the 1837size of file structure. Colin Ian King. 1838 1839---------------------------------------- 184013 September 2012. Summary of changes for version 20120913: 1841 1842 18431) ACPICA Kernel-resident Subsystem: 1844 1845ACPI 5.0: Added two new notify types for the Hardware Error Notification 1846Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 1847and 1848MCE(6). 1849 1850Table Manager: Merged/removed duplicate code in the root table resize 1851functions. One function is external, the other is internal. Lv Zheng, 1852ACPICA 1853BZ 846. 1854 1855Makefiles: Completely removed the obsolete "Linux" makefiles under 1856acpica/generate/linux. These makefiles are obsolete and have been 1857replaced 1858by 1859the generic unix makefiles under acpica/generate/unix. 1860 1861Makefiles: Ensure that binary files always copied properly. Minor rule 1862change 1863to ensure that the final binary output files are always copied up to the 1864appropriate binary directory (bin32 or bin64.) 1865 1866Example Code and Data Size: These are the sizes for the OS-independent 1867acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1868debug 1869version of the code includes the debug output trace mechanism and has a 1870much 1871larger code and data size. 1872 1873 Previous Release: 1874 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 1875 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 1876 Current Release: 1877 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 1878 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 1879 1880 18812) iASL Compiler/Disassembler and Tools: 1882 1883Disassembler: Fixed a possible fault during the disassembly of resource 1884descriptors when a second parse is required because of the invocation of 1885external control methods within the table. With assistance from 1886adq@lidskialf.net. ACPICA BZ 976. 1887 1888iASL: Fixed a namepath optimization problem. An error can occur if the 1889parse 1890node that contains the namepath to be optimized does not have a parent 1891node 1892that is a named object. This change fixes the problem. 1893 1894iASL: Fixed a regression where the AML file is not deleted on errors. The 1895AML 1896output file should be deleted if there are any errors during the 1897compiler. 1898The 1899only exception is if the -f (force output) option is used. ACPICA BZ 974. 1900 1901iASL: Added a feature to automatically increase internal line buffer 1902sizes. 1903Via realloc(), automatically increase the internal line buffer sizes as 1904necessary to support very long source code lines. The current version of 1905the 1906preprocessor requires a buffer long enough to contain full source code 1907lines. 1908This change increases the line buffer(s) if the input lines go beyond the 1909current buffer size. This eliminates errors that occurred when a source 1910code 1911line was longer than the buffer. 1912 1913iASL: Fixed a problem with constant folding in method declarations. The 1914SyncLevel term is a ByteConstExpr, and incorrect code would be generated 1915if a 1916Type3 opcode was used. 1917 1918Debugger: Improved command help support. For incorrect argument count, 1919display 1920full help for the command. For help command itself, allow an argument to 1921specify a command. 1922 1923Test Suites: Several bug fixes for the ASLTS suite reduces the number of 1924errors during execution of the suite. Guan Chao. 1925 1926---------------------------------------- 192716 August 2012. Summary of changes for version 20120816: 1928 1929 19301) ACPICA Kernel-resident Subsystem: 1931 1932Removed all use of the deprecated _GTS and _BFS predefined methods. The 1933_GTS 1934(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 1935deprecated and will probably be removed from the ACPI specification. 1936Windows 1937does not invoke them, and reportedly never will. The final nail in the 1938coffin 1939is that the ACPI specification states that these methods must be run with 1940interrupts off, which is not going to happen in a kernel interpreter. 1941Note: 1942Linux has removed all use of the methods also. It was discovered that 1943invoking these functions caused failures on some machines, probably 1944because 1945they were never tested since Windows does not call them. Affects two 1946external 1947interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 1948ACPICA BZ 969. 1949 1950Implemented support for complex bit-packed buffers returned from the _PLD 1951(Physical Location of Device) predefined method. Adds a new external 1952interface, AcpiDecodePldBuffer that parses the buffer into a more usable 1953C 1954structure. Note: C Bitfields cannot be used for this type of predefined 1955structure since the memory layout of individual bitfields is not defined 1956by 1957the C language. In addition, there are endian concerns where a compiler 1958will 1959change the bitfield ordering based on the machine type. The new ACPICA 1960interface eliminates these issues, and should be called after _PLD is 1961executed. ACPICA BZ 954. 1962 1963Implemented a change to allow a scope change to root (via "Scope (\)") 1964during 1965execution of module-level ASL code (code that is executed at table load 1966time.) Lin Ming. 1967 1968Added the Windows8/Server2012 string for the _OSI method. This change 1969adds 1970a 1971new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 19722012. 1973 1974Added header support for the new ACPI tables DBG2 (Debug Port Table Type 19752) 1976and CSRT (Core System Resource Table). 1977 1978Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 1979names. This simplifies access to the buffers returned by these predefined 1980names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 1981 1982GPE support: Removed an extraneous parameter from the various low-level 1983internal GPE functions. Tang Feng. 1984 1985Removed the linux makefiles from the unix packages. The generate/linux 1986makefiles are obsolete and have been removed from the unix tarball 1987release 1988packages. The replacement makefiles are under generate/unix, and there is 1989a 1990top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 1991 1992Updates for Unix makefiles: 19931) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 19942) Update linker flags (move to end of command line) for AcpiExec 1995utility. 1996Guan Chao. 1997 1998Split ACPICA initialization functions to new file, utxfinit.c. Split from 1999utxface.c to improve modularity and reduce file size. 2000 2001Example Code and Data Size: These are the sizes for the OS-independent 2002acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2003debug version of the code includes the debug output trace mechanism and 2004has a 2005much larger code and data size. 2006 2007 Previous Release: 2008 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2009 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2010 Current Release: 2011 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2012 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2013 2014 20152) iASL Compiler/Disassembler and Tools: 2016 2017iASL: Fixed a problem with constant folding for fixed-length constant 2018expressions. The constant-folding code was not being invoked for constant 2019expressions that allow the use of type 3/4/5 opcodes to generate 2020constants 2021for expressions such as ByteConstExpr, WordConstExpr, etc. This could 2022result 2023in the generation of invalid AML bytecode. ACPICA BZ 970. 2024 2025iASL: Fixed a generation issue on newer versions of Bison. Newer versions 2026apparently automatically emit some of the necessary externals. This 2027change 2028handles these versions in order to eliminate generation warnings. 2029 2030Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 2031 2032Disassembler: Add support to decode _PLD buffers. The decoded buffer 2033appears 2034within comments in the output file. 2035 2036Debugger: Fixed a regression with the "Threads" command where 2037AE_BAD_PARAMETER was always returned. 2038 2039---------------------------------------- 204011 July 2012. Summary of changes for version 20120711: 2041 20421) ACPICA Kernel-resident Subsystem: 2043 2044Fixed a possible fault in the return package object repair code. Fixes a 2045problem that can occur when a lone package object is wrapped with an 2046outer 2047package object in order to force conformance to the ACPI specification. 2048Can 2049affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 2050_DLM, 2051_CSD, _PSD, _TSD. 2052 2053Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 2054PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 2055ARB_DIS bit must be implemented in the host-dependent C3 processor power 2056state 2057support. Note, ARB_DIS is obsolete and only applies to older chipsets, 2058both 2059Intel and other vendors. (for Intel: ICH4-M and earlier) 2060 2061This change removes the code to disable/enable bus master arbitration 2062during 2063suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 2064causes 2065resume problems on some machines. The change has been in use for over 2066seven 2067years within Linux. 2068 2069Implemented two new external interfaces to support host-directed dynamic 2070ACPI 2071table load and unload. They are intended to simplify the host 2072implementation 2073of hot-plug support: 2074 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 2075 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 2076table. 2077See the ACPICA reference for additional details. Adds one new file, 2078components/tables/tbxfload.c 2079 2080Implemented and deployed two new interfaces for errors and warnings that 2081are 2082known to be caused by BIOS/firmware issues: 2083 AcpiBiosError: Prints "ACPI Firmware Error" message. 2084 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 2085Deployed these new interfaces in the ACPICA Table Manager code for ACPI 2086table 2087and FADT errors. Additional deployment to be completed as appropriate in 2088the 2089future. The associated conditional macros are ACPI_BIOS_ERROR and 2090ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 2091ACPICA 2092BZ 2093843. 2094 2095Implicit notify support: ensure that no memory allocation occurs within a 2096critical region. This fix moves a memory allocation outside of the time 2097that a 2098spinlock is held. Fixes issues on systems that do not allow this 2099behavior. 2100Jung-uk Kim. 2101 2102Split exception code utilities and tables into a new file, 2103utilities/utexcep.c 2104 2105Example Code and Data Size: These are the sizes for the OS-independent 2106acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2107debug 2108version of the code includes the debug output trace mechanism and has a 2109much 2110larger code and data size. 2111 2112 Previous Release: 2113 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2114 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2115 Current Release: 2116 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2117 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2118 2119 21202) iASL Compiler/Disassembler and Tools: 2121 2122iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 2123of 21240. Jung-uk Kim. 2125 2126Debugger: Enhanced the "tables" command to emit additional information 2127about 2128the current set of ACPI tables, including the owner ID and flags decode. 2129 2130Debugger: Reimplemented the "unload" command to use the new 2131AcpiUnloadParentTable external interface. This command was disable 2132previously 2133due to need for an unload interface. 2134 2135AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 2136option 2137will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 2138 2139---------------------------------------- 214020 June 2012. Summary of changes for version 20120620: 2141 2142 21431) ACPICA Kernel-resident Subsystem: 2144 2145Implemented support to expand the "implicit notify" feature to allow 2146multiple 2147devices to be notified by a single GPE. This feature automatically 2148generates a 2149runtime device notification in the absence of a BIOS-provided GPE control 2150method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 2151notify is 2152provided by ACPICA for Windows compatibility, and is a workaround for 2153BIOS 2154AML 2155code errors. See the description of the AcpiSetupGpeForWake interface in 2156the 2157APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 2158 2159Changed some comments and internal function names to simplify and ensure 2160correctness of the Linux code translation. No functional changes. 2161 2162Example Code and Data Size: These are the sizes for the OS-independent 2163acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2164debug 2165version of the code includes the debug output trace mechanism and has a 2166much 2167larger code and data size. 2168 2169 Previous Release: 2170 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2171 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2172 Current Release: 2173 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2174 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2175 2176 21772) iASL Compiler/Disassembler and Tools: 2178 2179Disassembler: Added support to emit short, commented descriptions for the 2180ACPI 2181predefined names in order to improve the readability of the disassembled 2182output. ACPICA BZ 959. Changes include: 2183 1) Emit descriptions for all standard predefined names (_INI, _STA, 2184_PRW, 2185etc.) 2186 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 2187 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 2188etc.) 2189 2190AcpiSrc: Fixed several long-standing Linux code translation issues. 2191Argument 2192descriptions in function headers are now translated properly to lower 2193case 2194and 2195underscores. ACPICA BZ 961. Also fixes translation problems such as 2196these: 2197(old -> new) 2198 i_aSL -> iASL 2199 00-7_f -> 00-7F 2200 16_k -> 16K 2201 local_fADT -> local_FADT 2202 execute_oSI -> execute_OSI 2203 2204iASL: Fixed a problem where null bytes were inadvertently emitted into 2205some 2206listing files. 2207 2208iASL: Added the existing debug options to the standard help screen. There 2209are 2210no longer two different help screens. ACPICA BZ 957. 2211 2212AcpiHelp: Fixed some typos in the various predefined name descriptions. 2213Also 2214expand some of the descriptions where appropriate. 2215 2216iASL: Fixed the -ot option (display compile times/statistics). Was not 2217working 2218properly for standard output; only worked for the debug file case. 2219 2220---------------------------------------- 222118 May 2012. Summary of changes for version 20120518: 2222 2223 22241) ACPICA Core Subsystem: 2225 2226Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 2227defined 2228to block until asynchronous events such as notifies and GPEs have 2229completed. 2230Within ACPICA, it is only called before a notify or GPE handler is 2231removed/uninstalled. It also may be useful for the host OS within related 2232drivers such as the Embedded Controller driver. See the ACPICA reference 2233for 2234additional information. ACPICA BZ 868. 2235 2236ACPI Tables: Added a new error message for a possible overflow failure 2237during 2238the conversion of FADT 32-bit legacy register addresses to internal 2239common 224064- 2241bit GAS structure representation. The GAS has a one-byte "bit length" 2242field, 2243thus limiting the register length to 255 bits. ACPICA BZ 953. 2244 2245Example Code and Data Size: These are the sizes for the OS-independent 2246acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2247debug 2248version of the code includes the debug output trace mechanism and has a 2249much 2250larger code and data size. 2251 2252 Previous Release: 2253 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2254 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2255 Current Release: 2256 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2257 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2258 2259 22602) iASL Compiler/Disassembler and Tools: 2261 2262iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 2263macro. 2264This keyword was added late in the ACPI 5.0 release cycle and was not 2265implemented until now. 2266 2267Disassembler: Added support for Operation Region externals. Adds missing 2268support for operation regions that are defined in another table, and 2269referenced locally via a Field or BankField ASL operator. Now generates 2270the 2271correct External statement. 2272 2273Disassembler: Several additional fixes for the External() statement 2274generation 2275related to some ASL operators. Also, order the External() statements 2276alphabetically in the disassembler output. Fixes the External() 2277generation 2278for 2279the Create* field, Alias, and Scope operators: 2280 1) Create* buffer field operators - fix type mismatch warning on 2281disassembly 2282 2) Alias - implement missing External support 2283 3) Scope - fix to make sure all necessary externals are emitted. 2284 2285iASL: Improved pathname support. For include files, merge the prefix 2286pathname 2287with the file pathname and eliminate unnecessary components. Convert 2288backslashes in all pathnames to forward slashes, for readability. Include 2289file 2290pathname changes affect both #include and Include() type operators. 2291 2292iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 2293end 2294of a valid line by inserting a newline and then returning the EOF during 2295the 2296next call to GetNextLine. Prevents the line from being ignored due to EOF 2297condition. 2298 2299iASL: Implemented some changes to enhance the IDE support (-vi option.) 2300Error 2301and Warning messages are now correctly recognized for both the source 2302code 2303browser and the global error and warning counts. 2304 2305---------------------------------------- 230620 April 2012. Summary of changes for version 20120420: 2307 2308 23091) ACPICA Core Subsystem: 2310 2311Implemented support for multiple notify handlers. This change adds 2312support 2313to 2314allow multiple system and device notify handlers on Device, Thermal Zone, 2315and 2316Processor objects. This can simplify the host OS notification 2317implementation. 2318Also re-worked and restructured the entire notify support code to 2319simplify 2320handler installation, handler removal, notify event queuing, and notify 2321dispatch to handler(s). Note: there can still only be two global notify 2322handlers - one for system notifies and one for device notifies. There are 2323no 2324changes to the existing handler install/remove interfaces. Lin Ming, Bob 2325Moore, Rafael Wysocki. 2326 2327Fixed a regression in the package repair code where the object reference 2328count was calculated incorrectly. Regression was introduced in the commit 2329"Support to add Package wrappers". 2330 2331Fixed a couple possible memory leaks in the AML parser, in the error 2332recovery 2333path. Jesper Juhl, Lin Ming. 2334 2335Example Code and Data Size: These are the sizes for the OS-independent 2336acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2337debug version of the code includes the debug output trace mechanism and 2338has a 2339much larger code and data size. 2340 2341 Previous Release: 2342 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2343 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2344 Current Release: 2345 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2346 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2347 2348 23492) iASL Compiler/Disassembler and Tools: 2350 2351iASL: Fixed a problem with the resource descriptor support where the 2352length 2353of the StartDependentFn and StartDependentFnNoPrio descriptors were not 2354included in cumulative descriptor offset, resulting in incorrect values 2355for 2356resource tags within resource descriptors appearing after a 2357StartDependent* 2358descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 2359 2360iASL and Preprocessor: Implemented full support for the #line directive 2361to 2362correctly track original source file line numbers through the .i 2363preprocessor 2364output file - for error and warning messages. 2365 2366iASL: Expand the allowable byte constants for address space IDs. 2367Previously, 2368the allowable range was 0x80-0xFF (user-defined spaces), now the range is 23690x0A-0xFF to allow for custom and new IDs without changing the compiler. 2370 2371iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 2372 2373iASL: Add option to completely disable the preprocessor (-Pn). 2374 2375iASL: Now emit all error/warning messages to standard error (stderr) by 2376default (instead of the previous stdout). 2377 2378ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 2379Update 2380for resource descriptor offset fix above. Update/cleanup error output 2381routines. Enable and send iASL errors/warnings to an error logfile 2382(error.txt). Send all other iASL output to a logfile (compiler.txt). 2383Fixed 2384several extraneous "unrecognized operator" messages. 2385 2386---------------------------------------- 238720 March 2012. Summary of changes for version 20120320: 2388 2389 23901) ACPICA Core Subsystem: 2391 2392Enhanced the sleep/wake interfaces to optionally execute the _GTS method 2393(Going To Sleep) and the _BFS method (Back From Sleep). Windows 2394apparently 2395does not execute these methods, and therefore these methods are often 2396untested. It has been seen on some systems where the execution of these 2397methods causes errors and also prevents the machine from entering S5. It 2398is 2399therefore suggested that host operating systems do not execute these 2400methods 2401by default. In the future, perhaps these methods can be optionally 2402executed 2403based on the age of the system and/or what is the newest version of 2404Windows 2405that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 2406and 2407AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 2408Ming. 2409 2410Fixed a problem where the length of the local/common FADT was set too 2411early. 2412The local FADT table length cannot be set to the common length until the 2413original length has been examined. There is code that checks the table 2414length 2415and sets various fields appropriately. This can affect older machines 2416with 2417early FADT versions. For example, this can cause inadvertent writes to 2418the 2419CST_CNT register. Julian Anastasov. 2420 2421Fixed a mapping issue related to a physical table override. Use the 2422deferred 2423mapping mechanism for tables loaded via the physical override OSL 2424interface. 2425This allows for early mapping before the virtual memory manager is 2426available. 2427Thomas Renninger, Bob Moore. 2428 2429Enhanced the automatic return-object repair code: Repair a common problem 2430with 2431predefined methods that are defined to return a variable-length Package 2432of 2433sub-objects. If there is only one sub-object, some BIOS ASL code 2434mistakenly 2435simply returns the single object instead of a Package with one sub- 2436object. 2437This new support will repair this error by wrapping a Package object 2438around 2439the original object, creating the correct and expected Package with one 2440sub- 2441object. Names that can be repaired in this manner include: _ALR, _CSD, 2442_HPX, 2443_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 2444939. 2445 2446Changed the exception code returned for invalid ACPI paths passed as 2447parameters to external interfaces such as AcpiEvaluateObject. Was 2448AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 2449 2450Example Code and Data Size: These are the sizes for the OS-independent 2451acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2452debug 2453version of the code includes the debug output trace mechanism and has a 2454much 2455larger code and data size. 2456 2457 Previous Release: 2458 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2459 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2460 Current Release: 2461 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2462 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2463 2464 24652) iASL Compiler/Disassembler and Tools: 2466 2467iASL: Added the infrastructure and initial implementation of a integrated 2468C- 2469like preprocessor. This will simplify BIOS development process by 2470eliminating 2471the need for a separate preprocessing step during builds. On Windows, it 2472also 2473eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 2474features including full #define() macro support are still under 2475development. 2476These preprocessor directives are supported: 2477 #define 2478 #elif 2479 #else 2480 #endif 2481 #error 2482 #if 2483 #ifdef 2484 #ifndef 2485 #include 2486 #pragma message 2487 #undef 2488 #warning 2489In addition, these new command line options are supported: 2490 -D <symbol> Define symbol for preprocessor use 2491 -li Create preprocessed output file (*.i) 2492 -P Preprocess only and create preprocessor output file (*.i) 2493 2494Table Compiler: Fixed a problem where the equals operator within an 2495expression 2496did not work properly. 2497 2498Updated iASL to use the current versions of Bison/Flex. Updated the 2499Windows 2500project file to invoke these tools from the standard location. ACPICA BZ 2501904. 2502Versions supported: 2503 Flex for Windows: V2.5.4 2504 Bison for Windows: V2.4.1 2505 2506---------------------------------------- 250715 February 2012. Summary of changes for version 20120215: 2508 2509 25101) ACPICA Core Subsystem: 2511 2512There have been some major changes to the sleep/wake support code, as 2513described below (a - e). 2514 2515a) The AcpiLeaveSleepState has been split into two interfaces, similar to 2516AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 2517AcpiLeaveSleepStatePrep. This allows the host to perform actions between 2518the 2519time the _BFS method is called and the _WAK method is called. NOTE: all 2520hosts 2521must update their wake/resume code or else sleep/wake will not work 2522properly. 2523Rafael Wysocki. 2524 2525b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 2526_WAK 2527method. Some machines require that the GPEs are enabled before the _WAK 2528method 2529is executed. Thomas Renninger. 2530 2531c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 2532bit. 2533Some BIOS code assumes that WAK_STS will be cleared on resume and use it 2534to 2535determine whether the system is rebooting or resuming. Matthew Garrett. 2536 2537d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 2538Sleep) to 2539match the ACPI specification requirement. Rafael Wysocki. 2540 2541e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 2542registers within the V5 FADT. This support adds two new files: 2543hardware/hwesleep.c implements the support for the new registers. Moved 2544all 2545sleep/wake external interfaces to hardware/hwxfsleep.c. 2546 2547 2548Added a new OSL interface for ACPI table overrides, 2549AcpiOsPhysicalTableOverride. This interface allows the host to override a 2550table via a physical address, instead of the logical address required by 2551AcpiOsTableOverride. This simplifies the host implementation. Initial 2552implementation by Thomas Renninger. The ACPICA implementation creates a 2553single 2554shared function for table overrides that attempts both a logical and a 2555physical override. 2556 2557Expanded the OSL memory read/write interfaces to 64-bit data 2558(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 2559transfer support for GAS register structures passed to AcpiRead and 2560AcpiWrite. 2561 2562Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 2563custom 2564build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 2565model. 2566See the ACPICA reference for details. ACPICA BZ 942. This option removes 2567about 256810% of the code and 5% of the static data, and the following hardware 2569ACPI 2570features become unavailable: 2571 PM Event and Control registers 2572 SCI interrupt (and handler) 2573 Fixed Events 2574 General Purpose Events (GPEs) 2575 Global Lock 2576 ACPI PM timer 2577 FACS table (Waking vectors and Global Lock) 2578 2579Updated the unix tarball directory structure to match the ACPICA git 2580source 2581tree. This ensures that the generic unix makefiles work properly (in 2582generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 2583867. 2584 2585Updated the return value of the _REV predefined method to integer value 5 2586to 2587reflect ACPI 5.0 support. 2588 2589Moved the external ACPI PM timer interface prototypes to the public 2590acpixf.h 2591file where they belong. 2592 2593Example Code and Data Size: These are the sizes for the OS-independent 2594acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2595debug 2596version of the code includes the debug output trace mechanism and has a 2597much 2598larger code and data size. 2599 2600 Previous Release: 2601 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2602 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2603 Current Release: 2604 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2605 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2606 2607 26082) iASL Compiler/Disassembler and Tools: 2609 2610Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 2611descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 2612incorrectly displayed. 2613 2614AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 2615specification. 2616 2617---------------------------------------- 261811 January 2012. Summary of changes for version 20120111: 2619 2620 26211) ACPICA Core Subsystem: 2622 2623Implemented a new mechanism to allow host device drivers to check for 2624address 2625range conflicts with ACPI Operation Regions. Both SystemMemory and 2626SystemIO 2627address spaces are supported. A new external interface, 2628AcpiCheckAddressRange, 2629allows drivers to check an address range against the ACPI namespace. See 2630the 2631ACPICA reference for additional details. Adds one new file, 2632utilities/utaddress.c. Lin Ming, Bob Moore. 2633 2634Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 2635Control 2636and 2637Status registers, update the ACPI 5.0 flags, and update internal data 2638structures to handle an FADT larger than 256 bytes. The size of the ACPI 26395.0 2640FADT is 268 bytes. 2641 2642Updated all ACPICA copyrights and signons to 2012. Added the 2012 2643copyright to 2644all module headers and signons, including the standard Linux header. This 2645affects virtually every file in the ACPICA core subsystem, iASL compiler, 2646and 2647all ACPICA utilities. 2648 2649Example Code and Data Size: These are the sizes for the OS-independent 2650acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2651debug 2652version of the code includes the debug output trace mechanism and has a 2653much 2654larger code and data size. 2655 2656 Previous Release: 2657 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 2658 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 2659 Current Release: 2660 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2661 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2662 2663 26642) iASL Compiler/Disassembler and Tools: 2665 2666Disassembler: fixed a problem with the automatic resource tag generation 2667support. Fixes a problem where the resource tags are inadvertently not 2668constructed if the table being disassembled contains external references 2669to 2670control methods. Moved the actual construction of the tags to after the 2671final 2672namespace is constructed (after 2nd parse is invoked due to external 2673control 2674method references.) ACPICA BZ 941. 2675 2676Table Compiler: Make all "generic" operators caseless. These are the 2677operators 2678like UINT8, String, etc. Making these caseless improves ease-of-use. 2679ACPICA BZ 2680934. 2681 2682---------------------------------------- 268323 November 2011. Summary of changes for version 20111123: 2684 26850) ACPI 5.0 Support: 2686 2687This release contains full support for the ACPI 5.0 specification, as 2688summarized below. 2689 2690Reduced Hardware Support: 2691------------------------- 2692 2693This support allows for ACPI systems without the usual ACPI hardware. 2694This 2695support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 2696will 2697not attempt to initialize or use any of the usual ACPI hardware. Note, 2698when 2699this flag is set, all of the following ACPI hardware is assumed to be not 2700present and is not initialized or accessed: 2701 2702 General Purpose Events (GPEs) 2703 Fixed Events (PM1a/PM1b and PM Control) 2704 Power Management Timer and Console Buttons (power/sleep) 2705 Real-time Clock Alarm 2706 Global Lock 2707 System Control Interrupt (SCI) 2708 The FACS is assumed to be non-existent 2709 2710ACPI Tables: 2711------------ 2712 2713All new tables and updates to existing tables are fully supported in the 2714ACPICA headers (for use by device drivers), the disassembler, and the 2715iASL 2716Data Table Compiler. ACPI 5.0 defines these new tables: 2717 2718 BGRT /* Boot Graphics Resource Table */ 2719 DRTM /* Dynamic Root of Trust for Measurement table */ 2720 FPDT /* Firmware Performance Data Table */ 2721 GTDT /* Generic Timer Description Table */ 2722 MPST /* Memory Power State Table */ 2723 PCCT /* Platform Communications Channel Table */ 2724 PMTT /* Platform Memory Topology Table */ 2725 RASF /* RAS Feature table */ 2726 2727Operation Regions/SpaceIDs: 2728--------------------------- 2729 2730All new operation regions are fully supported by the iASL compiler, the 2731disassembler, and the ACPICA runtime code (for dispatch to region 2732handlers.) 2733The new operation region Space IDs are: 2734 2735 GeneralPurposeIo 2736 GenericSerialBus 2737 2738Resource Descriptors: 2739--------------------- 2740 2741All new ASL resource descriptors are fully supported by the iASL 2742compiler, 2743the 2744ASL/AML disassembler, and the ACPICA runtime Resource Manager code 2745(including 2746all new predefined resource tags). New descriptors are: 2747 2748 FixedDma 2749 GpioIo 2750 GpioInt 2751 I2cSerialBus 2752 SpiSerialBus 2753 UartSerialBus 2754 2755ASL/AML Operators, New and Modified: 2756------------------------------------ 2757 2758One new operator is added, the Connection operator, which is used to 2759associate 2760a GeneralPurposeIo or GenericSerialBus resource descriptor with 2761individual 2762field objects within an operation region. Several new protocols are 2763associated 2764with the AccessAs operator. All are fully supported by the iASL compiler, 2765disassembler, and runtime ACPICA AML interpreter: 2766 2767 Connection // Declare Field Connection 2768attributes 2769 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 2770 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 2771Protocol 2772 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 2773 RawDataBuffer // Data type for Vendor Data 2774fields 2775 2776Predefined ASL/AML Objects: 2777--------------------------- 2778 2779All new predefined objects/control-methods are supported by the iASL 2780compiler 2781and the ACPICA runtime validation/repair (arguments and return values.) 2782New 2783predefined names include the following: 2784 2785Standard Predefined Names (Objects or Control Methods): 2786 _AEI, _CLS, _CPC, _CWS, _DEP, 2787 _DLM, _EVT, _GCP, _CRT, _GWS, 2788 _HRV, _PRE, _PSE, _SRT, _SUB. 2789 2790Resource Tags (Names used to access individual fields within resource 2791descriptors): 2792 _DBT, _DPL, _DRS, _END, _FLC, 2793 _IOR, _LIN, _MOD, _PAR, _PHA, 2794 _PIN, _PPI, _POL, _RXL, _SLV, 2795 _SPE, _STB, _TXL, _VEN. 2796 2797ACPICA External Interfaces: 2798--------------------------- 2799 2800Several new interfaces have been defined for use by ACPI-related device 2801drivers and other host OS services: 2802 2803AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 2804to 2805acquire and release AML mutexes that are defined in the DSDT/SSDT tables 2806provided by the BIOS. They are intended to be used in conjunction with 2807the 2808ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 2809mutual exclusion with the AML code/interpreter. 2810 2811AcpiGetEventResources: Returns the (formatted) resource descriptors as 2812defined 2813by the ACPI 5.0 _AEI object (ACPI Event Information). This object 2814provides 2815resource descriptors associated with hardware-reduced platform events, 2816similar 2817to the AcpiGetCurrentResources interface. 2818 2819Operation Region Handlers: For General Purpose IO and Generic Serial Bus 2820operation regions, information about the Connection() object and any 2821optional 2822length information is passed to the region handler within the Context 2823parameter. 2824 2825AcpiBufferToResource: This interface converts a raw AML buffer containing 2826a 2827resource template or resource descriptor to the ACPI_RESOURCE internal 2828format 2829suitable for use by device drivers. Can be used by an operation region 2830handler 2831to convert the Connection() buffer object into a ACPI_RESOURCE. 2832 2833Miscellaneous/Tools/TestSuites: 2834------------------------------- 2835 2836Support for extended _HID names (Four alpha characters instead of three). 2837Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 2838Support for ACPI 5.0 features in the ASLTS test suite. 2839Fully updated documentation (ACPICA and iASL reference documents.) 2840 2841ACPI Table Definition Language: 2842------------------------------- 2843 2844Support for this language was implemented and released as a subsystem of 2845the 2846iASL compiler in 2010. (See the iASL compiler User Guide.) 2847 2848 2849Non-ACPI 5.0 changes for this release: 2850-------------------------------------- 2851 28521) ACPICA Core Subsystem: 2853 2854Fix a problem with operation region declarations where a failure can 2855occur 2856if 2857the region name and an argument that evaluates to an object (such as the 2858region address) are in different namespace scopes. Lin Ming, ACPICA BZ 2859937. 2860 2861Do not abort an ACPI table load if an invalid space ID is found within. 2862This 2863will be caught later if the offending method is executed. ACPICA BZ 925. 2864 2865Fixed an issue with the FFixedHW space ID where the ID was not always 2866recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 2867 2868Fixed a problem with the 32-bit generation of the unix-specific OSL 2869(osunixxf.c). Lin Ming, ACPICA BZ 936. 2870 2871Several changes made to enable generation with the GCC 4.6 compiler. 2872ACPICA BZ 2873935. 2874 2875New error messages: Unsupported I/O requests (not 8/16/32 bit), and 2876Index/Bank 2877field registers out-of-range. 2878 28792) iASL Compiler/Disassembler and Tools: 2880 2881iASL: Implemented the __PATH__ operator, which returns the full pathname 2882of 2883the current source file. 2884 2885AcpiHelp: Automatically display expanded keyword information for all ASL 2886operators. 2887 2888Debugger: Add "Template" command to disassemble/dump resource template 2889buffers. 2890 2891Added a new master script to generate and execute the ASLTS test suite. 2892Automatically handles 32- and 64-bit generation. See tests/aslts.sh 2893 2894iASL: Fix problem with listing generation during processing of the 2895Switch() 2896operator where AML listing was disabled until the entire Switch block was 2897completed. 2898 2899iASL: Improve support for semicolon statement terminators. Fix "invalid 2900character" message for some cases when the semicolon is used. Semicolons 2901are 2902now allowed after every <Term> grammar element. ACPICA BZ 927. 2903 2904iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 2905923. 2906 2907Disassembler: Fix problem with disassembly of the DataTableRegion 2908operator 2909where an inadvertent "Unhandled deferred opcode" message could be 2910generated. 2911 29123) Example Code and Data Size 2913 2914These are the sizes for the OS-independent acpica.lib produced by the 2915Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 2916includes the debug output trace mechanism and has a much larger code and 2917data 2918size. 2919 2920 Previous Release: 2921 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 2922 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 2923 Current Release: 2924 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 2925 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 2926 2927---------------------------------------- 292822 September 2011. Summary of changes for version 20110922: 2929 29300) ACPI 5.0 News: 2931 2932Support for ACPI 5.0 in ACPICA has been underway for several months and 2933will 2934be released at the same time that ACPI 5.0 is officially released. 2935 2936The ACPI 5.0 specification is on track for release in the next few 2937months. 2938 29391) ACPICA Core Subsystem: 2940 2941Fixed a problem where the maximum sleep time for the Sleep() operator was 2942intended to be limited to two seconds, but was inadvertently limited to 294320 2944seconds instead. 2945 2946Linux and Unix makefiles: Added header file dependencies to ensure 2947correct 2948generation of ACPICA core code and utilities. Also simplified the 2949makefiles 2950considerably through the use of the vpath variable to specify search 2951paths. 2952ACPICA BZ 924. 2953 29542) iASL Compiler/Disassembler and Tools: 2955 2956iASL: Implemented support to check the access length for all fields 2957created to 2958access named Resource Descriptor fields. For example, if a resource field 2959is 2960defined to be two bits, a warning is issued if a CreateXxxxField() is 2961used 2962with an incorrect bit length. This is implemented for all current 2963resource 2964descriptor names. ACPICA BZ 930. 2965 2966Disassembler: Fixed a byte ordering problem with the output of 24-bit and 296756- 2968bit integers. 2969 2970iASL: Fixed a couple of issues associated with variable-length package 2971objects. 1) properly handle constants like One, Ones, Zero -- do not make 2972a 2973VAR_PACKAGE when these are used as a package length. 2) Allow the 2974VAR_PACKAGE 2975opcode (in addition to PACKAGE) when validating object types for 2976predefined 2977names. 2978 2979iASL: Emit statistics for all output files (instead of just the ASL input 2980and 2981AML output). Includes listings, hex files, etc. 2982 2983iASL: Added -G option to the table compiler to allow the compilation of 2984custom 2985ACPI tables. The only part of a table that is required is the standard 298636- 2987byte 2988ACPI header. 2989 2990AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 2991headers), 2992which also adds correct 64-bit support. Also, now all output filenames 2993are 2994completely lower case. 2995 2996AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 2997loading table files. A warning is issued for any such tables. The only 2998exception is an FADT. This also fixes a possible fault when attempting to 2999load 3000non-AML tables. ACPICA BZ 932. 3001 3002AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 3003a 3004missing table terminator could cause a fault when using the -p option. 3005 3006AcpiSrc: Fixed a possible divide-by-zero fault when generating file 3007statistics. 3008 30093) Example Code and Data Size 3010 3011These are the sizes for the OS-independent acpica.lib produced by the 3012Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3013includes the debug output trace mechanism and has a much larger code and 3014data 3015size. 3016 3017 Previous Release (VC 9.0): 3018 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3019 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3020 Current Release (VC 9.0): 3021 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3022 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3023 3024 3025---------------------------------------- 302623 June 2011. Summary of changes for version 20110623: 3027 30281) ACPI CA Core Subsystem: 3029 3030Updated the predefined name repair mechanism to not attempt repair of a 3031_TSS 3032return object if a _PSS object is present. We can only sort the _TSS 3033return 3034package if there is no _PSS within the same scope. This is because if 3035_PSS 3036is 3037present, the ACPI specification dictates that the _TSS Power Dissipation 3038field 3039is to be ignored, and therefore some BIOSs leave garbage values in the 3040_TSS 3041Power field(s). In this case, it is best to just return the _TSS package 3042as- 3043is. Reported by, and fixed with assistance from Fenghua Yu. 3044 3045Added an option to globally disable the control method return value 3046validation 3047and repair. This runtime option can be used to disable return value 3048repair 3049if 3050this is causing a problem on a particular machine. Also added an option 3051to 3052AcpiExec (-dr) to set this disable flag. 3053 3054All makefiles and project files: Major changes to improve generation of 3055ACPICA 3056tools. ACPICA BZ 912: 3057 Reduce default optimization levels to improve compatibility 3058 For Linux, add strict-aliasing=0 for gcc 4 3059 Cleanup and simplify use of command line defines 3060 Cleanup multithread library support 3061 Improve usage messages 3062 3063Linux-specific header: update handling of THREAD_ID and pthread. For the 306432- 3065bit case, improve casting to eliminate possible warnings, especially with 3066the 3067acpica tools. 3068 3069Example Code and Data Size: These are the sizes for the OS-independent 3070acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3071debug 3072version of the code includes the debug output trace mechanism and has a 3073much 3074larger code and data size. 3075 3076 Previous Release (VC 9.0): 3077 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3078 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3079 Current Release (VC 9.0): 3080 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3081 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3082 30832) iASL Compiler/Disassembler and Tools: 3084 3085With this release, a new utility named "acpihelp" has been added to the 3086ACPICA 3087package. This utility summarizes the ACPI specification chapters for the 3088ASL 3089and AML languages. It generates under Linux/Unix as well as Windows, and 3090provides the following functionality: 3091 Find/display ASL operator(s) -- with description and syntax. 3092 Find/display ASL keyword(s) -- with exact spelling and descriptions. 3093 Find/display ACPI predefined name(s) -- with description, number 3094 of arguments, and the return value data type. 3095 Find/display AML opcode name(s) -- with opcode, arguments, and 3096grammar. 3097 Decode/display AML opcode -- with opcode name, arguments, and 3098grammar. 3099 3100Service Layers: Make multi-thread support configurable. Conditionally 3101compile 3102the multi-thread support so that threading libraries will not be linked 3103if 3104not 3105necessary. The only tool that requires multi-thread support is AcpiExec. 3106 3107iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 3108of 3109Bison appear to want the interface to yyerror to be a const char * (or at 3110least this is a problem when generating iASL on some systems.) ACPICA BZ 3111923 3112Pierre Lejeune. 3113 3114Tools: Fix for systems where O_BINARY is not defined. Only used for 3115Windows 3116versions of the tools. 3117 3118---------------------------------------- 311927 May 2011. Summary of changes for version 20110527: 3120 31211) ACPI CA Core Subsystem: 3122 3123ASL Load() operator: Reinstate most restrictions on the incoming ACPI 3124table 3125signature. Now, only allow SSDT, OEMx, and a null signature. History: 3126 1) Originally, we checked the table signature for "SSDT" or "PSDT". 3127 (PSDT is now obsolete.) 3128 2) We added support for OEMx tables, signature "OEM" plus a fourth 3129 "don't care" character. 3130 3) Valid tables were encountered with a null signature, so we just 3131 gave up on validating the signature, (05/2008). 3132 4) We encountered non-AML tables such as the MADT, which caused 3133 interpreter errors and kernel faults. So now, we once again allow 3134 only SSDT, OEMx, and now, also a null signature. (05/2011). 3135 3136Added the missing _TDL predefined name to the global name list in order 3137to 3138enable validation. Affects both the core ACPICA code and the iASL 3139compiler. 3140 3141Example Code and Data Size: These are the sizes for the OS-independent 3142acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3143debug 3144version of the code includes the debug output trace mechanism and has a 3145much 3146larger code and data size. 3147 3148 Previous Release (VC 9.0): 3149 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3150 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3151 Current Release (VC 9.0): 3152 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3153 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3154 31552) iASL Compiler/Disassembler and Tools: 3156 3157Debugger/AcpiExec: Implemented support for "complex" method arguments on 3158the 3159debugger command line. This adds support beyond simple integers -- 3160including 3161Strings, Buffers, and Packages. Includes support for nested packages. 3162Increased the default command line buffer size to accommodate these 3163arguments. 3164See the ACPICA reference for details and syntax. ACPICA BZ 917. 3165 3166Debugger/AcpiExec: Implemented support for "default" method arguments for 3167the 3168Execute/Debug command. Now, the debugger will always invoke a control 3169method 3170with the required number of arguments -- even if the command line 3171specifies 3172none or insufficient arguments. It uses default integer values for any 3173missing 3174arguments. Also fixes a bug where only six method arguments maximum were 3175supported instead of the required seven. 3176 3177Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 3178and 3179also return status in order to prevent buffer overruns. See the ACPICA 3180reference for details and syntax. ACPICA BZ 921 3181 3182iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 3183makefiles to simplify support for the two different but similar parser 3184generators, bison and yacc. 3185 3186Updated the generic unix makefile for gcc 4. The default gcc version is 3187now 3188expected to be 4 or greater, since options specific to gcc 4 are used. 3189 3190---------------------------------------- 319113 April 2011. Summary of changes for version 20110413: 3192 31931) ACPI CA Core Subsystem: 3194 3195Implemented support to execute a so-called "orphan" _REG method under the 3196EC 3197device. This change will force the execution of a _REG method underneath 3198the 3199EC 3200device even if there is no corresponding operation region of type 3201EmbeddedControl. Fixes a problem seen on some machines and apparently is 3202compatible with Windows behavior. ACPICA BZ 875. 3203 3204Added more predefined methods that are eligible for automatic NULL 3205package 3206element removal. This change adds another group of predefined names to 3207the 3208list 3209of names that can be repaired by having NULL package elements dynamically 3210removed. This group are those methods that return a single variable- 3211length 3212package containing simple data types such as integers, buffers, strings. 3213This 3214includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 3215_PSL, 3216_Sx, 3217and _TZD. ACPICA BZ 914. 3218 3219Split and segregated all internal global lock functions to a new file, 3220evglock.c. 3221 3222Updated internal address SpaceID for DataTable regions. Moved this 3223internal 3224space 3225id in preparation for ACPI 5.0 changes that will include some new space 3226IDs. 3227This 3228change should not affect user/host code. 3229 3230Example Code and Data Size: These are the sizes for the OS-independent 3231acpica.lib 3232produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3233version of 3234the code includes the debug output trace mechanism and has a much larger 3235code 3236and 3237data size. 3238 3239 Previous Release (VC 9.0): 3240 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3241 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3242 Current Release (VC 9.0): 3243 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3244 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3245 32462) iASL Compiler/Disassembler and Tools: 3247 3248iASL/DTC: Major update for new grammar features. Allow generic data types 3249in 3250custom ACPI tables. Field names are now optional. Any line can be split 3251to 3252multiple lines using the continuation char (\). Large buffers now use 3253line- 3254continuation character(s) and no colon on the continuation lines. See the 3255grammar 3256update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 3257Moore. 3258 3259iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 3260statements. 3261Since the parser stuffs a "zero" as the return value for these statements 3262(due 3263to 3264the underlying AML grammar), they were seen as "return with value" by the 3265iASL 3266semantic checking. They are now seen correctly as "null" return 3267statements. 3268 3269iASL: Check if a_REG declaration has a corresponding Operation Region. 3270Adds a 3271check for each _REG to ensure that there is in fact a corresponding 3272operation 3273region declaration in the same scope. If not, the _REG method is not very 3274useful 3275since it probably won't be executed. ACPICA BZ 915. 3276 3277iASL/DTC: Finish support for expression evaluation. Added a new 3278expression 3279parser 3280that implements c-style operator precedence and parenthesization. ACPICA 3281bugzilla 3282908. 3283 3284Disassembler/DTC: Remove support for () and <> style comments in data 3285tables. 3286Now 3287that DTC has full expression support, we don't want to have comment 3288strings 3289that 3290start with a parentheses or a less-than symbol. Now, only the standard /* 3291and 3292// 3293comments are supported, as well as the bracket [] comments. 3294 3295AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 3296"unusual" 3297headers in the acpidump file. Update the header validation to support 3298these 3299tables. Problem introduced in previous AcpiXtract version in the change 3300to 3301support "wrong checksum" error messages emitted by acpidump utility. 3302 3303iASL: Add a * option to generate all template files (as a synonym for 3304ALL) 3305as 3306in 3307"iasl -T *" or "iasl -T ALL". 3308 3309iASL/DTC: Do not abort compiler on fatal errors. We do not want to 3310completely 3311abort the compiler on "fatal" errors, simply should abort the current 3312compile. 3313This allows multiple compiles with a single (possibly wildcard) compiler 3314invocation. 3315 3316---------------------------------------- 331716 March 2011. Summary of changes for version 20110316: 3318 33191) ACPI CA Core Subsystem: 3320 3321Fixed a problem caused by a _PRW method appearing at the namespace root 3322scope 3323during the setup of wake GPEs. A fault could occur if a _PRW directly 3324under 3325the 3326root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 3327 3328Implemented support for "spurious" Global Lock interrupts. On some 3329systems, a 3330global lock interrupt can occur without the pending flag being set. Upon 3331a 3332GL 3333interrupt, we now ensure that a thread is actually waiting for the lock 3334before 3335signaling GL availability. Rafael Wysocki, Bob Moore. 3336 3337Example Code and Data Size: These are the sizes for the OS-independent 3338acpica.lib 3339produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3340version of 3341the code includes the debug output trace mechanism and has a much larger 3342code 3343and 3344data size. 3345 3346 Previous Release (VC 9.0): 3347 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3348 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3349 Current Release (VC 9.0): 3350 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3351 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3352 33532) iASL Compiler/Disassembler and Tools: 3354 3355Implemented full support for the "SLIC" ACPI table. Includes support in 3356the 3357header files, disassembler, table compiler, and template generator. Bob 3358Moore, 3359Lin Ming. 3360 3361AcpiXtract: Correctly handle embedded comments and messages from 3362AcpiDump. 3363Apparently some or all versions of acpidump will occasionally emit a 3364comment 3365like 3366"Wrong checksum", etc., into the dump file. This was causing problems for 3367AcpiXtract. ACPICA BZ 905. 3368 3369iASL: Fix the Linux makefile by removing an inadvertent double file 3370inclusion. 3371ACPICA BZ 913. 3372 3373AcpiExec: Update installation of operation region handlers. Install one 3374handler 3375for a user-defined address space. This is used by the ASL test suite 3376(ASLTS). 3377 3378---------------------------------------- 337911 February 2011. Summary of changes for version 20110211: 3380 33811) ACPI CA Core Subsystem: 3382 3383Added a mechanism to defer _REG methods for some early-installed 3384handlers. 3385Most user handlers should be installed before call to 3386AcpiEnableSubsystem. 3387However, Event handlers and region handlers should be installed after 3388AcpiInitializeObjects. Override handlers for the "default" regions should 3389be 3390installed early, however. This change executes all _REG methods for the 3391default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 3392chicken/egg issues between them. ACPICA BZ 848. 3393 3394Implemented an optimization for GPE detection. This optimization will 3395simply 3396ignore GPE registers that contain no enabled GPEs -- there is no need to 3397read the register since this information is available internally. This 3398becomes more important on machines with a large GPE space. ACPICA 3399bugzilla 3400884. Lin Ming. Suggestion from Joe Liu. 3401 3402Removed all use of the highly unreliable FADT revision field. The 3403revision 3404number in the FADT has been found to be completely unreliable and cannot 3405be 3406trusted. Only the actual table length can be used to infer the version. 3407This 3408change updates the ACPICA core and the disassembler so that both no 3409longer 3410even look at the FADT version and instead depend solely upon the FADT 3411length. 3412 3413Fix an unresolved name issue for the no-debug and no-error-message source 3414generation cases. The _AcpiModuleName was left undefined in these cases, 3415but 3416it is actually needed as a parameter to some interfaces. Define 3417_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 3418 3419Split several large files (makefiles and project files updated) 3420 utglobal.c -> utdecode.c 3421 dbcomds.c -> dbmethod.c dbnames.c 3422 dsopcode.c -> dsargs.c dscontrol.c 3423 dsload.c -> dsload2.c 3424 aslanalyze.c -> aslbtypes.c aslwalks.c 3425 3426Example Code and Data Size: These are the sizes for the OS-independent 3427acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3428debug version of the code includes the debug output trace mechanism and 3429has 3430a much larger code and data size. 3431 3432 Previous Release (VC 9.0): 3433 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3434 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3435 Current Release (VC 9.0): 3436 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3437 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3438 34392) iASL Compiler/Disassembler and Tools: 3440 3441iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 3442These are useful C-style macros with the standard definitions. ACPICA 3443bugzilla 898. 3444 3445iASL/DTC: Added support for integer expressions and labels. Support for 3446full 3447expressions for all integer fields in all ACPI tables. Support for labels 3448in 3449"generic" portions of tables such as UEFI. See the iASL reference manual. 3450 3451Debugger: Added a command to display the status of global handlers. The 3452"handlers" command will display op region, fixed event, and miscellaneous 3453global handlers. installation status -- and for op regions, whether 3454default 3455or user-installed handler will be used. 3456 3457iASL: Warn if reserved method incorrectly returns a value. Many 3458predefined 3459names are defined such that they do not return a value. If implemented as 3460a 3461method, issue a warning if such a name explicitly returns a value. ACPICA 3462Bugzilla 855. 3463 3464iASL: Added detection of GPE method name conflicts. Detects a conflict 3465where 3466there are two GPE methods of the form _Lxy and _Exy in the same scope. 3467(For 3468example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 3469 3470iASL/DTC: Fixed a couple input scanner issues with comments and line 3471numbers. Comment remover could get confused and miss a comment ending. 3472Fixed 3473a problem with line counter maintenance. 3474 3475iASL/DTC: Reduced the severity of some errors from fatal to error. There 3476is 3477no need to abort on simple errors within a field definition. 3478 3479Debugger: Simplified the output of the help command. All help output now 3480in 3481a single screen, instead of help subcommands. ACPICA Bugzilla 897. 3482 3483---------------------------------------- 348412 January 2011. Summary of changes for version 20110112: 3485 34861) ACPI CA Core Subsystem: 3487 3488Fixed a race condition between method execution and namespace walks that 3489can 3490possibly cause a fault. The problem was apparently introduced in version 349120100528 as a result of a performance optimization that reduces the 3492number 3493of 3494namespace walks upon method exit by using the delete_namespace_subtree 3495function instead of the delete_namespace_by_owner function used 3496previously. 3497Bug is a missing namespace lock in the delete_namespace_subtree function. 3498dana.myers@oracle.com 3499 3500Fixed several issues and a possible fault with the automatic "serialized" 3501method support. History: This support changes a method to "serialized" on 3502the 3503fly if the method generates an AE_ALREADY_EXISTS error, indicating the 3504possibility that it cannot handle reentrancy. This fix repairs a couple 3505of 3506issues seen in the field, especially on machines with many cores: 3507 3508 1) Delete method children only upon the exit of the last thread, 3509 so as to not delete objects out from under other running threads 3510 (and possibly causing a fault.) 3511 2) Set the "serialized" bit for the method only upon the exit of the 3512 Last thread, so as to not cause deadlock when running threads 3513 attempt to exit. 3514 3) Cleanup the use of the AML "MethodFlags" and internal method flags 3515 so that there is no longer any confusion between the two. 3516 3517 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 3518 3519Debugger: Now lock the namespace for duration of a namespace dump. 3520Prevents 3521issues if the namespace is changing dynamically underneath the debugger. 3522Especially affects temporary namespace nodes, since the debugger displays 3523these also. 3524 3525Updated the ordering of include files. The ACPICA headers should appear 3526before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 3527set 3528any necessary compiler-specific defines, etc. Affects the ACPI-related 3529tools 3530and utilities. 3531 3532Updated all ACPICA copyrights and signons to 2011. Added the 2011 3533copyright 3534to all module headers and signons, including the Linux header. This 3535affects 3536virtually every file in the ACPICA core subsystem, iASL compiler, and all 3537utilities. 3538 3539Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 3540project files for VC++ 6.0 are now obsolete. New project files can be 3541found 3542under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 3543details. 3544 3545Example Code and Data Size: These are the sizes for the OS-independent 3546acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3547debug version of the code includes the debug output trace mechanism and 3548has a 3549much larger code and data size. 3550 3551 Previous Release (VC 6.0): 3552 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3553 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3554 Current Release (VC 9.0): 3555 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3556 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3557 35582) iASL Compiler/Disassembler and Tools: 3559 3560iASL: Added generic data types to the Data Table compiler. Add "generic" 3561data 3562types such as UINT32, String, Unicode, etc., to simplify the generation 3563of 3564platform-defined tables such as UEFI. Lin Ming. 3565 3566iASL: Added listing support for the Data Table Compiler. Adds listing 3567support 3568(-l) to display actual binary output for each line of input code. 3569 3570---------------------------------------- 357109 December 2010. Summary of changes for version 20101209: 3572 35731) ACPI CA Core Subsystem: 3574 3575Completed the major overhaul of the GPE support code that was begun in 3576July 35772010. Major features include: removal of _PRW execution in ACPICA (host 3578executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 3579changes to existing interfaces, simplification of GPE handler operation, 3580and 3581a handful of new interfaces: 3582 3583 AcpiUpdateAllGpes 3584 AcpiFinishGpe 3585 AcpiSetupGpeForWake 3586 AcpiSetGpeWakeMask 3587 One new file, evxfgpe.c to consolidate all external GPE interfaces. 3588 3589See the ACPICA Programmer Reference for full details and programming 3590information. See the new section 4.4 "General Purpose Event (GPE) 3591Support" 3592for a full overview, and section 8.7 "ACPI General Purpose Event 3593Management" 3594for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 3595Ming, 3596Bob Moore, Rafael Wysocki. 3597 3598Implemented a new GPE feature for Windows compatibility, the "Implicit 3599Wake 3600GPE Notify". This feature will automatically issue a Notify(2) on a 3601device 3602when a Wake GPE is received if there is no corresponding GPE method or 3603handler. ACPICA BZ 870. 3604 3605Fixed a problem with the Scope() operator during table parse and load 3606phase. 3607During load phase (table load or method execution), the scope operator 3608should 3609not enter the target into the namespace. Instead, it should open a new 3610scope 3611at the target location. Linux BZ 19462, ACPICA BZ 882. 3612 3613Example Code and Data Size: These are the sizes for the OS-independent 3614acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3615debug version of the code includes the debug output trace mechanism and 3616has a 3617much larger code and data size. 3618 3619 Previous Release: 3620 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3621 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3622 Current Release: 3623 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3624 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3625 36262) iASL Compiler/Disassembler and Tools: 3627 3628iASL: Relax the alphanumeric restriction on _CID strings. These strings 3629are 3630"bus-specific" per the ACPI specification, and therefore any characters 3631are 3632acceptable. The only checks that can be performed are for a null string 3633and 3634perhaps for a leading asterisk. ACPICA BZ 886. 3635 3636iASL: Fixed a problem where a syntax error that caused a premature EOF 3637condition on the source file emitted a very confusing error message. The 3638premature EOF is now detected correctly. ACPICA BZ 891. 3639 3640Disassembler: Decode the AccessSize within a Generic Address Structure 3641(byte 3642access, word access, etc.) Note, this field does not allow arbitrary bit 3643access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 3644 3645New: AcpiNames utility - Example namespace dump utility. Shows an example 3646of 3647ACPICA configuration for a minimal namespace dump utility. Uses table and 3648namespace managers, but no AML interpreter. Does not add any 3649functionality 3650over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 3651partition and configure ACPICA. ACPICA BZ 883. 3652 3653AML Debugger: Increased the debugger buffer size for method return 3654objects. 3655Was 4K, increased to 16K. Also enhanced error messages for debugger 3656method 3657execution, including the buffer overflow case. 3658 3659---------------------------------------- 366013 October 2010. Summary of changes for version 20101013: 3661 36621) ACPI CA Core Subsystem: 3663 3664Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 3665now 3666clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 3667HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 3668 3669Changed the type of the predefined namespace object _TZ from ThermalZone 3670to 3671Device. This was found to be confusing to the host software that 3672processes 3673the various thermal zones, since _TZ is not really a ThermalZone. 3674However, 3675a 3676Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 3677Zhang. 3678 3679Added Windows Vista SP2 to the list of supported _OSI strings. The actual 3680string is "Windows 2006 SP2". 3681 3682Eliminated duplicate code in AcpiUtExecute* functions. Now that the 3683nsrepair 3684code automatically repairs _HID-related strings, this type of code is no 3685longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 3686878. 3687 3688Example Code and Data Size: These are the sizes for the OS-independent 3689acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3690debug version of the code includes the debug output trace mechanism and 3691has a 3692much larger code and data size. 3693 3694 Previous Release: 3695 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3696 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3697 Current Release: 3698 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3699 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3700 37012) iASL Compiler/Disassembler and Tools: 3702 3703iASL: Implemented additional compile-time validation for _HID strings. 3704The 3705non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 3706length 3707of 3708the string must be exactly seven or eight characters. For both _HID and 3709_CID 3710strings, all characters must be alphanumeric. ACPICA BZ 874. 3711 3712iASL: Allow certain "null" resource descriptors. Some BIOS code creates 3713descriptors that are mostly or all zeros, with the expectation that they 3714will 3715be filled in at runtime. iASL now allows this as long as there is a 3716"resource 3717tag" (name) associated with the descriptor, which gives the ASL a handle 3718needed to modify the descriptor. ACPICA BZ 873. 3719 3720Added single-thread support to the generic Unix application OSL. 3721Primarily 3722for iASL support, this change removes the use of semaphores in the 3723single- 3724threaded ACPICA tools/applications - increasing performance. The 3725_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 3726option. ACPICA BZ 879. 3727 3728AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 3729support 3730for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 3731 3732iASL: Moved all compiler messages to a new file, aslmessages.h. 3733 3734---------------------------------------- 373515 September 2010. Summary of changes for version 20100915: 3736 37371) ACPI CA Core Subsystem: 3738 3739Removed the AcpiOsDerivePciId OSL interface. The various host 3740implementations 3741of this function were not OS-dependent and are now obsolete and can be 3742removed from all host OSLs. This function has been replaced by 3743AcpiHwDerivePciId, which is now part of the ACPICA core code. 3744AcpiHwDerivePciId has been implemented without recursion. Adds one new 3745module, hwpci.c. ACPICA BZ 857. 3746 3747Implemented a dynamic repair for _HID and _CID strings. The following 3748problems are now repaired at runtime: 1) Remove a leading asterisk in the 3749string, and 2) the entire string is uppercased. Both repairs are in 3750accordance with the ACPI specification and will simplify host driver 3751code. 3752ACPICA BZ 871. 3753 3754The ACPI_THREAD_ID type is no longer configurable, internally it is now 3755always UINT64. This simplifies the ACPICA code, especially any printf 3756output. 3757UINT64 is the only common data type for all thread_id types across all 3758operating systems. It is now up to the host OSL to cast the native 3759thread_id 3760type to UINT64 before returning the value to ACPICA (via 3761AcpiOsGetThreadId). 3762Lin Ming, Bob Moore. 3763 3764Added the ACPI_INLINE type to enhance the ACPICA configuration. The 3765"inline" 3766keyword is not standard across compilers, and this type allows inline to 3767be 3768configured on a per-compiler basis. Lin Ming. 3769 3770Made the system global AcpiGbl_SystemAwakeAndRunning publically 3771available. 3772Added an extern for this boolean in acpixf.h. Some hosts utilize this 3773value 3774during suspend/restore operations. ACPICA BZ 869. 3775 3776All code that implements error/warning messages with the "ACPI:" prefix 3777has 3778been moved to a new module, utxferror.c. 3779 3780The UINT64_OVERLAY was moved to utmath.c, which is the only module where 3781it 3782is used. ACPICA BZ 829. Lin Ming, Bob Moore. 3783 3784Example Code and Data Size: These are the sizes for the OS-independent 3785acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3786debug version of the code includes the debug output trace mechanism and 3787has a 3788much larger code and data size. 3789 3790 Previous Release: 3791 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 3792 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 3793 Current Release: 3794 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3795 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3796 37972) iASL Compiler/Disassembler and Tools: 3798 3799iASL/Disassembler: Write ACPI errors to stderr instead of the output 3800file. 3801This keeps the output files free of random error messages that may 3802originate 3803from within the namespace/interpreter code. Used this opportunity to 3804merge 3805all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 3806866. Lin Ming, Bob Moore. 3807 3808Tools: update some printfs for ansi warnings on size_t. Handle width 3809change 3810of size_t on 32-bit versus 64-bit generations. Lin Ming. 3811 3812---------------------------------------- 381306 August 2010. Summary of changes for version 20100806: 3814 38151) ACPI CA Core Subsystem: 3816 3817Designed and implemented a new host interface to the _OSI support code. 3818This 3819will allow the host to dynamically add or remove multiple _OSI strings, 3820as 3821well as install an optional handler that is called for each _OSI 3822invocation. 3823Also added a new AML debugger command, 'osi' to display and modify the 3824global 3825_OSI string table, and test support in the AcpiExec utility. See the 3826ACPICA 3827reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 3828New Functions: 3829 AcpiInstallInterface - Add an _OSI string. 3830 AcpiRemoveInterface - Delete an _OSI string. 3831 AcpiInstallInterfaceHandler - Install optional _OSI handler. 3832Obsolete Functions: 3833 AcpiOsValidateInterface - no longer used. 3834New Files: 3835 source/components/utilities/utosi.c 3836 3837Re-introduced the support to enable multi-byte transfers for Embedded 3838Controller (EC) operation regions. A reported problem was found to be a 3839bug 3840in the host OS, not in the multi-byte support. Previously, the maximum 3841data 3842size passed to the EC operation region handler was a single byte. There 3843are 3844often EC Fields larger than one byte that need to be transferred, and it 3845is 3846useful for the EC driver to lock these as a single transaction. This 3847change 3848enables single transfers larger than 8 bits. This effectively changes the 3849access to the EC space from ByteAcc to AnyAcc, and will probably require 3850changes to the host OS Embedded Controller driver to enable 16/32/64/256- 3851bit 3852transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 3853 3854Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 3855prototype in acpiosxf.h had the output value pointer as a (void *). 3856It should be a (UINT64 *). This may affect some host OSL code. 3857 3858Fixed a couple problems with the recently modified Linux makefiles for 3859iASL 3860and AcpiExec. These new makefiles place the generated object files in the 3861local directory so that there can be no collisions between the files that 3862are 3863shared between them that are compiled with different options. 3864 3865Example Code and Data Size: These are the sizes for the OS-independent 3866acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3867debug version of the code includes the debug output trace mechanism and 3868has a 3869much larger code and data size. 3870 3871 Previous Release: 3872 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 3873 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 3874 Current Release: 3875 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 3876 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 3877 38782) iASL Compiler/Disassembler and Tools: 3879 3880iASL/Disassembler: Added a new option (-da, "disassemble all") to load 3881the 3882namespace from and disassemble an entire group of AML files. Useful for 3883loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 3884and 3885disassembling with one simple command. ACPICA BZ 865. Lin Ming. 3886 3887iASL: Allow multiple invocations of -e option. This change allows 3888multiple 3889uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 3890834. 3891Lin Ming. 3892 3893---------------------------------------- 389402 July 2010. Summary of changes for version 20100702: 3895 38961) ACPI CA Core Subsystem: 3897 3898Implemented several updates to the recently added GPE reference count 3899support. The model for "wake" GPEs is changing to give the host OS 3900complete 3901control of these GPEs. Eventually, the ACPICA core will not execute any 3902_PRW 3903methods, since the host already must execute them. Also, additional 3904changes 3905were made to help ensure that the reference counts are kept in proper 3906synchronization with reality. Rafael J. Wysocki. 3907 39081) Ensure that GPEs are not enabled twice during initialization. 39092) Ensure that GPE enable masks stay in sync with the reference count. 39103) Do not inadvertently enable GPEs when writing GPE registers. 39114) Remove the internal wake reference counter and add new AcpiGpeWakeup 3912interface. This interface will set or clear individual GPEs for wakeup. 39135) Remove GpeType argument from AcpiEnable and AcpiDisable. These 3914interfaces 3915are now used for "runtime" GPEs only. 3916 3917Changed the behavior of the GPE install/remove handler interfaces. The 3918GPE 3919is 3920no longer disabled during this process, as it was found to cause problems 3921on 3922some machines. Rafael J. Wysocki. 3923 3924Reverted a change introduced in version 20100528 to enable Embedded 3925Controller multi-byte transfers. This change was found to cause problems 3926with 3927Index Fields and possibly Bank Fields. It will be reintroduced when these 3928problems have been resolved. 3929 3930Fixed a problem with references to Alias objects within Package Objects. 3931A 3932reference to an Alias within the definition of a Package was not always 3933resolved properly. Aliases to objects like Processors, Thermal zones, 3934etc. 3935were resolved to the actual object instead of a reference to the object 3936as 3937it 3938should be. Package objects are only allowed to contain integer, string, 3939buffer, package, and reference objects. Redhat bugzilla 608648. 3940 3941Example Code and Data Size: These are the sizes for the OS-independent 3942acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3943debug version of the code includes the debug output trace mechanism and 3944has a 3945much larger code and data size. 3946 3947 Previous Release: 3948 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 3949 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 3950 Current Release: 3951 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 3952 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 3953 39542) iASL Compiler/Disassembler and Tools: 3955 3956iASL: Implemented a new compiler subsystem to allow definition and 3957compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 3958These 3959are called "ACPI Data Tables", and the new compiler is the "Data Table 3960Compiler". This compiler is intended to simplify the existing error-prone 3961process of creating these tables for the BIOS, as well as allowing the 3962disassembly, modification, recompilation, and override of existing ACPI 3963data 3964tables. See the iASL User Guide for detailed information. 3965 3966iASL: Implemented a new Template Generator option in support of the new 3967Data 3968Table Compiler. This option will create examples of all known ACPI tables 3969that can be used as the basis for table development. See the iASL 3970documentation and the -T option. 3971 3972Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 3973Descriptor Table). 3974 3975Updated the Linux makefiles for iASL and AcpiExec to place the generated 3976object files in the local directory so that there can be no collisions 3977between the shared files between them that are generated with different 3978options. 3979 3980Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 3981Use 3982the #define __APPLE__ to enable this support. 3983 3984---------------------------------------- 398528 May 2010. Summary of changes for version 20100528: 3986 3987Note: The ACPI 4.0a specification was released on April 5, 2010 and is 3988available at www.acpi.info. This is primarily an errata release. 3989 39901) ACPI CA Core Subsystem: 3991 3992Undefined ACPI tables: We are looking for the definitions for the 3993following 3994ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 3995 3996Implemented support to enable multi-byte transfers for Embedded 3997Controller 3998(EC) operation regions. Previously, the maximum data size passed to the 3999EC 4000operation region handler was a single byte. There are often EC Fields 4001larger 4002than one byte that need to be transferred, and it is useful for the EC 4003driver 4004to lock these as a single transaction. This change enables single 4005transfers 4006larger than 8 bits. This effectively changes the access to the EC space 4007from 4008ByteAcc to AnyAcc, and will probably require changes to the host OS 4009Embedded 4010Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 4011bit 4012transfers. Alexey Starikovskiy, Lin Ming 4013 4014Implemented a performance enhancement for namespace search and access. 4015This 4016change enhances the performance of namespace searches and walks by adding 4017a 4018backpointer to the parent in each namespace node. On large namespaces, 4019this 4020change can improve overall ACPI performance by up to 9X. Adding a pointer 4021to 4022each namespace node increases the overall size of the internal namespace 4023by 4024about 5%, since each namespace entry usually consists of both a namespace 4025node and an ACPI operand object. However, this is the first growth of the 4026namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 4027 4028Implemented a performance optimization that reduces the number of 4029namespace 4030walks. On control method exit, only walk the namespace if the method is 4031known 4032to have created namespace objects outside of its local scope. Previously, 4033the 4034entire namespace was traversed on each control method exit. This change 4035can 4036improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 4037Moore. 4038 4039Added support to truncate I/O addresses to 16 bits for Windows 4040compatibility. 4041Some ASL code has been seen in the field that inadvertently has bits set 4042above bit 15. This feature is optional and is enabled if the BIOS 4043requests 4044any Windows OSI strings. It can also be enabled by the host OS. Matthew 4045Garrett, Bob Moore. 4046 4047Added support to limit the maximum time for the ASL Sleep() operator. To 4048prevent accidental deep sleeps, limit the maximum time that Sleep() will 4049actually sleep. Configurable, the default maximum is two seconds. ACPICA 4050bugzilla 854. 4051 4052Added run-time validation support for the _WDG and_WED Microsoft 4053predefined 4054methods. These objects are defined by "Windows Instrumentation", and are 4055not 4056part of the ACPI spec. ACPICA BZ 860. 4057 4058Expanded all statistic counters used during namespace and device 4059initialization from 16 to 32 bits in order to support very large 4060namespaces. 4061 4062Replaced all instances of %d in printf format specifiers with %u since 4063nearly 4064all integers in ACPICA are unsigned. 4065 4066Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 4067returned 4068as AE_NO_HANDLER. 4069 4070Example Code and Data Size: These are the sizes for the OS-independent 4071acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4072debug version of the code includes the debug output trace mechanism and 4073has a 4074much larger code and data size. 4075 4076 Previous Release: 4077 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4078 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4079 Current Release: 4080 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4081 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4082 40832) iASL Compiler/Disassembler and Tools: 4084 4085iASL: Added compiler support for the _WDG and_WED Microsoft predefined 4086methods. These objects are defined by "Windows Instrumentation", and are 4087not 4088part of the ACPI spec. ACPICA BZ 860. 4089 4090AcpiExec: added option to disable the memory tracking mechanism. The -dt 4091option will disable the tracking mechanism, which improves performance 4092considerably. 4093 4094AcpiExec: Restructured the command line options into -d (disable) and -e 4095(enable) options. 4096 4097---------------------------------------- 409828 April 2010. Summary of changes for version 20100428: 4099 41001) ACPI CA Core Subsystem: 4101 4102Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 4103including FADT-based and GPE Block Devices, execute any _PRW methods in 4104the 4105new table, and process any _Lxx/_Exx GPE methods in the new table. Any 4106runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 4107immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 4108Devices. Provides compatibility with other ACPI implementations. Two new 4109files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 4110Moore. 4111 4112Fixed a regression introduced in version 20100331 within the table 4113manager 4114where initial table loading could fail. This was introduced in the fix 4115for 4116AcpiReallocateRootTable. Also, renamed some of fields in the table 4117manager 4118data structures to clarify their meaning and use. 4119 4120Fixed a possible allocation overrun during internal object copy in 4121AcpiUtCopySimpleObject. The original code did not correctly handle the 4122case 4123where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 4124847. 4125 4126Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 4127possible access beyond end-of-allocation. Also, now fully validate 4128descriptor 4129(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 4130 4131Example Code and Data Size: These are the sizes for the OS-independent 4132acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4133debug version of the code includes the debug output trace mechanism and 4134has a 4135much larger code and data size. 4136 4137 Previous Release: 4138 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4139 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4140 Current Release: 4141 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4142 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4143 41442) iASL Compiler/Disassembler and Tools: 4145 4146iASL: Implemented Min/Max/Len/Gran validation for address resource 4147descriptors. This change implements validation for the address fields 4148that 4149are common to all address-type resource descriptors. These checks are 4150implemented: Checks for valid Min/Max, length within the Min/Max window, 4151valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 4152per 4153table 6-40 in the ACPI 4.0a specification. Also split the large 4154aslrestype1.c 4155and aslrestype2.c files into five new files. ACPICA BZ 840. 4156 4157iASL: Added support for the _Wxx predefined names. This support was 4158missing 4159and these names were not recognized by the compiler as valid predefined 4160names. ACPICA BZ 851. 4161 4162iASL: Added an error for all predefined names that are defined to return 4163no 4164value and thus must be implemented as Control Methods. These include all 4165of 4166the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 4167names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 4168 4169iASL: Implemented the -ts option to emit hex AML data in ASL format, as 4170an 4171ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 4172be 4173dynamically loaded via the Load() operator. Also cleaned up output for 4174the 4175- 4176ta and -tc options. ACPICA BZ 853. 4177 4178Tests: Added a new file with examples of extended iASL error checking. 4179Demonstrates the advanced error checking ability of the iASL compiler. 4180Available at tests/misc/badcode.asl. 4181 4182---------------------------------------- 418331 March 2010. Summary of changes for version 20100331: 4184 41851) ACPI CA Core Subsystem: 4186 4187Completed a major update for the GPE support in order to improve support 4188for 4189shared GPEs and to simplify both host OS and ACPICA code. Added a 4190reference 4191count mechanism to support shared GPEs that require multiple device 4192drivers. 4193Several external interfaces have changed. One external interface has been 4194removed. One new external interface was added. Most of the GPE external 4195interfaces now use the GPE spinlock instead of the events mutex (and the 4196Flags parameter for many GPE interfaces has been removed.) See the 4197updated 4198ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 4199Rafael 4200Wysocki. ACPICA BZ 831. 4201 4202Changed: 4203 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 4204Removed: 4205 AcpiSetGpeType 4206New: 4207 AcpiSetGpe 4208 4209Implemented write support for DataTable operation regions. These regions 4210are 4211defined via the DataTableRegion() operator. Previously, only read support 4212was 4213implemented. The ACPI specification allows DataTableRegions to be 4214read/write, 4215however. 4216 4217Implemented a new subsystem option to force a copy of the DSDT to local 4218memory. Optionally copy the entire DSDT to local memory (instead of 4219simply 4220mapping it.) There are some (albeit very rare) BIOSs that corrupt or 4221replace 4222the original DSDT, creating the need for this option. Default is FALSE, 4223do 4224not copy the DSDT. 4225 4226Implemented detection of a corrupted or replaced DSDT. This change adds 4227support to detect a DSDT that has been corrupted and/or replaced from 4228outside 4229the OS (by firmware). This is typically catastrophic for the system, but 4230has 4231been seen on some machines. Once this problem has been detected, the DSDT 4232copy option can be enabled via system configuration. Lin Ming, Bob Moore. 4233 4234Fixed two problems with AcpiReallocateRootTable during the root table 4235copy. 4236When copying the root table to the new allocation, the length used was 4237incorrect. The new size was used instead of the current table size, 4238meaning 4239too much data was copied. Also, the count of available slots for ACPI 4240tables 4241was not set correctly. Alexey Starikovskiy, Bob Moore. 4242 4243Example Code and Data Size: These are the sizes for the OS-independent 4244acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4245debug version of the code includes the debug output trace mechanism and 4246has a 4247much larger code and data size. 4248 4249 Previous Release: 4250 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4251 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4252 Current Release: 4253 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4254 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4255 42562) iASL Compiler/Disassembler and Tools: 4257 4258iASL: Implement limited typechecking for values returned from predefined 4259control methods. The type of any returned static (unnamed) object is now 4260validated. For example, Return(1). ACPICA BZ 786. 4261 4262iASL: Fixed a predefined name object verification regression. Fixes a 4263problem 4264introduced in version 20100304. An error is incorrectly generated if a 4265predefined name is declared as a static named object with a value defined 4266using the keywords "Zero", "One", or "Ones". Lin Ming. 4267 4268iASL: Added Windows 7 support for the -g option (get local ACPI tables) 4269by 4270reducing the requested registry access rights. ACPICA BZ 842. 4271 4272Disassembler: fixed a possible fault when generating External() 4273statements. 4274Introduced in commit ae7d6fd: Properly handle externals with parent- 4275prefix 4276(carat). Fixes a string length allocation calculation. Lin Ming. 4277 4278---------------------------------------- 427904 March 2010. Summary of changes for version 20100304: 4280 42811) ACPI CA Core Subsystem: 4282 4283Fixed a possible problem with the AML Mutex handling function 4284AcpiExReleaseMutex where the function could fault under the very rare 4285condition when the interpreter has blocked, the interpreter lock is 4286released, 4287the interpreter is then reentered via the same thread, and attempts to 4288acquire an AML mutex that was previously acquired. FreeBSD report 140979. 4289Lin 4290Ming. 4291 4292Implemented additional configuration support for the AML "Debug Object". 4293Output from the debug object can now be enabled via a global variable, 4294AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 4295debugging. 4296This debug output is now available in the release version of ACPICA 4297instead 4298of just the debug version. Also, the entire debug output module can now 4299be 4300configured out of the ACPICA build if desired. One new file added, 4301executer/exdebug.c. Lin Ming, Bob Moore. 4302 4303Added header support for the ACPI MCHI table (Management Controller Host 4304Interface Table). This table was added in ACPI 4.0, but the defining 4305document 4306has only recently become available. 4307 4308Standardized output of integer values for ACPICA warnings/errors. Always 4309use 43100x prefix for hex output, always use %u for unsigned integer decimal 4311output. 4312Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 4313400 4314invocations.) These invocations were converted from the original 4315ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 4316 4317Example Code and Data Size: These are the sizes for the OS-independent 4318acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4319debug version of the code includes the debug output trace mechanism and 4320has a 4321much larger code and data size. 4322 4323 Previous Release: 4324 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4325 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4326 Current Release: 4327 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4328 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4329 43302) iASL Compiler/Disassembler and Tools: 4331 4332iASL: Implemented typechecking support for static (non-control method) 4333predefined named objects that are declared with the Name() operator. For 4334example, the type of this object is now validated to be of type Integer: 4335Name(_BBN, 1). This change migrates the compiler to using the core 4336predefined 4337name table instead of maintaining a local version. Added a new file, 4338aslpredef.c. ACPICA BZ 832. 4339 4340Disassembler: Added support for the ACPI 4.0 MCHI table. 4341 4342---------------------------------------- 434321 January 2010. Summary of changes for version 20100121: 4344 43451) ACPI CA Core Subsystem: 4346 4347Added the 2010 copyright to all module headers and signons. This affects 4348virtually every file in the ACPICA core subsystem, the iASL compiler, the 4349tools/utilities, and the test suites. 4350 4351Implemented a change to the AcpiGetDevices interface to eliminate 4352unnecessary 4353invocations of the _STA method. In the case where a specific _HID is 4354requested, do not run _STA until a _HID match is found. This eliminates 4355potentially dozens of _STA calls during a search for a particular 4356device/HID, 4357which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 4358 4359Implemented an additional repair for predefined method return values. 4360Attempt 4361to repair unexpected NULL elements within returned Package objects. 4362Create 4363an 4364Integer of value zero, a NULL String, or a zero-length Buffer as 4365appropriate. 4366ACPICA BZ 818. Lin Ming, Bob Moore. 4367 4368Removed the obsolete ACPI_INTEGER data type. This type was introduced as 4369the 4370code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 4371(with 437264-bit AML integers). It is now obsolete and this change removes it from 4373the 4374ACPICA code base, replaced by UINT64. The original typedef has been 4375retained 4376for now for compatibility with existing device driver code. ACPICA BZ 4377824. 4378 4379Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 4380in 4381the parse tree object. 4382 4383Added additional warning options for the gcc-4 generation. Updated the 4384source 4385accordingly. This includes some code restructuring to eliminate 4386unreachable 4387code, elimination of some gotos, elimination of unused return values, 4388some 4389additional casting, and removal of redundant declarations. 4390 4391Example Code and Data Size: These are the sizes for the OS-independent 4392acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4393debug version of the code includes the debug output trace mechanism and 4394has a 4395much larger code and data size. 4396 4397 Previous Release: 4398 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4399 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4400 Current Release: 4401 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4402 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4403 44042) iASL Compiler/Disassembler and Tools: 4405 4406No functional changes for this release. 4407 4408---------------------------------------- 440914 December 2009. Summary of changes for version 20091214: 4410 44111) ACPI CA Core Subsystem: 4412 4413Enhanced automatic data type conversions for predefined name repairs. 4414This 4415change expands the automatic repairs/conversions for predefined name 4416return 4417values to make Integers, Strings, and Buffers fully interchangeable. 4418Also, 4419a 4420Buffer can be converted to a Package of Integers if necessary. The 4421nsrepair.c 4422module was completely restructured. Lin Ming, Bob Moore. 4423 4424Implemented automatic removal of null package elements during predefined 4425name 4426repairs. This change will automatically remove embedded and trailing NULL 4427package elements from returned package objects that are defined to 4428contain 4429a 4430variable number of sub-packages. The driver is then presented with a 4431package 4432with no null elements to deal with. ACPICA BZ 819. 4433 4434Implemented a repair for the predefined _FDE and _GTM names. The expected 4435return value for both names is a Buffer of 5 DWORDs. This repair fixes 4436two 4437possible problems (both seen in the field), where a package of integers 4438is 4439returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 4440Kim. 4441 4442Implemented additional module-level code support. This change will 4443properly 4444execute module-level code that is not at the root of the namespace (under 4445a 4446Device object, etc.). Now executes the code within the current scope 4447instead 4448of the root. ACPICA BZ 762. Lin Ming. 4449 4450Fixed possible mutex acquisition errors when running _REG methods. Fixes 4451a 4452problem where mutex errors can occur when running a _REG method that is 4453in 4454the same scope as a method-defined operation region or an operation 4455region 4456under a module-level IF block. This type of code is rare, so the problem 4457has 4458not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 4459 4460Fixed a possible memory leak during module-level code execution. An 4461object 4462could be leaked for each block of executed module-level code if the 4463interpreter slack mode is enabled This change deletes any implicitly 4464returned 4465object from the module-level code block. Lin Ming. 4466 4467Removed messages for successful predefined repair(s). The repair 4468mechanism 4469was considered too wordy. Now, messages are only unconditionally emitted 4470if 4471the return object cannot be repaired. Existing messages for successful 4472repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 4473827. 4474 4475Example Code and Data Size: These are the sizes for the OS-independent 4476acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4477debug version of the code includes the debug output trace mechanism and 4478has a 4479much larger code and data size. 4480 4481 Previous Release: 4482 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4483 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4484 Current Release: 4485 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4486 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4487 44882) iASL Compiler/Disassembler and Tools: 4489 4490iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 4491files 4492were no longer automatically removed at the termination of the compile. 4493 4494acpiexec: Implemented the -f option to specify default region fill value. 4495This option specifies the value used to initialize buffers that simulate 4496operation regions. Default value is zero. Useful for debugging problems 4497that 4498depend on a specific initial value for a region or field. 4499 4500---------------------------------------- 450112 November 2009. Summary of changes for version 20091112: 4502 45031) ACPI CA Core Subsystem: 4504 4505Implemented a post-order callback to AcpiWalkNamespace. The existing 4506interface only has a pre-order callback. This change adds an additional 4507parameter for a post-order callback which will be more useful for bus 4508scans. 4509ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 4510 4511Modified the behavior of the operation region memory mapping cache for 4512SystemMemory. Ensure that the memory mappings created for operation 4513regions 4514do not cross 4K page boundaries. Crossing a page boundary while mapping 4515regions can cause kernel warnings on some hosts if the pages have 4516different 4517attributes. Such regions are probably BIOS bugs, and this is the 4518workaround. 4519Linux BZ 14445. Lin Ming. 4520 4521Implemented an automatic repair for predefined methods that must return 4522sorted lists. This change will repair (by sorting) packages returned by 4523_ALR, 4524_PSS, and _TSS. Drivers can now assume that the packages are correctly 4525sorted 4526and do not contain NULL package elements. Adds one new file, 4527namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 4528 4529Fixed a possible fault during predefined name validation if a return 4530Package 4531object contains NULL elements. Also adds a warning if a NULL element is 4532followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 4533may 4534include repair or removal of all such NULL elements where possible. 4535 4536Implemented additional module-level executable AML code support. This 4537change 4538will execute module-level code that is not at the root of the namespace 4539(under a Device object, etc.) at table load time. Module-level executable 4540AML 4541code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 4542 4543Implemented a new internal function to create Integer objects. This 4544function 4545simplifies miscellaneous object creation code. ACPICA BZ 823. 4546 4547Reduced the severity of predefined repair messages, Warning to Info. 4548Since 4549the object was successfully repaired, a warning is too severe. Reduced to 4550an 4551info message for now. These messages may eventually be changed to debug- 4552only. 4553ACPICA BZ 812. 4554 4555Example Code and Data Size: These are the sizes for the OS-independent 4556acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4557debug version of the code includes the debug output trace mechanism and 4558has a 4559much larger code and data size. 4560 4561 Previous Release: 4562 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4563 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4564 Current Release: 4565 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4566 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4567 45682) iASL Compiler/Disassembler and Tools: 4569 4570iASL: Implemented Switch() with While(1) so that Break works correctly. 4571This 4572change correctly implements the Switch operator with a surrounding 4573While(1) 4574so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 4575 4576iASL: Added a message if a package initializer list is shorter than 4577package 4578length. Adds a new remark for a Package() declaration if an initializer 4579list 4580exists, but is shorter than the declared length of the package. Although 4581technically legal, this is probably a coding error and it is seen in the 4582field. ACPICA BZ 815. Lin Ming, Bob Moore. 4583 4584iASL: Fixed a problem where the compiler could fault after the maximum 4585number 4586of errors was reached (200). 4587 4588acpixtract: Fixed a possible warning for pointer cast if the compiler 4589warning 4590level set very high. 4591 4592---------------------------------------- 459313 October 2009. Summary of changes for version 20091013: 4594 45951) ACPI CA Core Subsystem: 4596 4597Fixed a problem where an Operation Region _REG method could be executed 4598more 4599than once. If a custom address space handler is installed by the host 4600before 4601the "initialize operation regions" phase of the ACPICA initialization, 4602any 4603_REG methods for that address space could be executed twice. This change 4604fixes the problem. ACPICA BZ 427. Lin Ming. 4605 4606Fixed a possible memory leak for the Scope() ASL operator. When the exact 4607invocation of "Scope(\)" is executed (change scope to root), one internal 4608operand object was leaked. Lin Ming. 4609 4610Implemented a run-time repair for the _MAT predefined method. If the _MAT 4611return value is defined as a Field object in the AML, and the field 4612size is less than or equal to the default width of an integer (32 or 461364),_MAT 4614can incorrectly return an Integer instead of a Buffer. ACPICA now 4615automatically repairs this problem. ACPICA BZ 810. 4616 4617Implemented a run-time repair for the _BIF and _BIX predefined methods. 4618The 4619"OEM Information" field is often incorrectly returned as an Integer with 4620value zero if the field is not supported by the platform. This is due to 4621an 4622ambiguity in the ACPI specification. The field should always be a string. 4623ACPICA now automatically repairs this problem by returning a NULL string 4624within the returned Package. ACPICA BZ 807. 4625 4626Example Code and Data Size: These are the sizes for the OS-independent 4627acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4628debug version of the code includes the debug output trace mechanism and 4629has a 4630much larger code and data size. 4631 4632 Previous Release: 4633 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 4634 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 4635 Current Release: 4636 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4637 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4638 46392) iASL Compiler/Disassembler and Tools: 4640 4641Disassembler: Fixed a problem where references to external symbols that 4642contained one or more parent-prefixes (carats) were not handled 4643correctly, 4644possibly causing a fault. ACPICA BZ 806. Lin Ming. 4645 4646Disassembler: Restructured the code so that all functions that handle 4647external symbols are in a single module. One new file is added, 4648common/dmextern.c. 4649 4650AML Debugger: Added a max count argument for the Batch command (which 4651executes multiple predefined methods within the namespace.) 4652 4653iASL: Updated the compiler documentation (User Reference.) Available at 4654http://www.acpica.org/documentation/. ACPICA BZ 750. 4655 4656AcpiXtract: Updated for Lint and other formatting changes. Close all open 4657files. 4658 4659---------------------------------------- 466003 September 2009. Summary of changes for version 20090903: 4661 46621) ACPI CA Core Subsystem: 4663 4664For Windows Vista compatibility, added the automatic execution of an _INI 4665method located at the namespace root (\_INI). This method is executed at 4666table load time. This support is in addition to the automatic execution 4667of 4668\_SB._INI. Lin Ming. 4669 4670Fixed a possible memory leak in the interpreter for AML package objects 4671if 4672the package initializer list is longer than the defined size of the 4673package. 4674This apparently can only happen if the BIOS changes the package size on 4675the 4676fly (seen in a _PSS object), as ASL compilers do not allow this. The 4677interpreter will truncate the package to the defined size (and issue an 4678error 4679message), but previously could leave the extra objects undeleted if they 4680were 4681pre-created during the argument processing (such is the case if the 4682package 4683consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 4684 4685Fixed a problem seen when a Buffer or String is stored to itself via ASL. 4686This has been reported in the field. Previously, ACPICA would zero out 4687the 4688buffer/string. Now, the operation is treated as a noop. Provides Windows 4689compatibility. ACPICA BZ 803. Lin Ming. 4690 4691Removed an extraneous error message for ASL constructs of the form 4692Store(LocalX,LocalX) when LocalX is uninitialized. These curious 4693statements 4694are seen in many BIOSs and are once again treated as NOOPs and no error 4695is 4696emitted when they are encountered. ACPICA BZ 785. 4697 4698Fixed an extraneous warning message if a _DSM reserved method returns a 4699Package object. _DSM can return any type of object, so validation on the 4700return type cannot be performed. ACPICA BZ 802. 4701 4702Example Code and Data Size: These are the sizes for the OS-independent 4703acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4704debug version of the code includes the debug output trace mechanism and 4705has a 4706much larger code and data size. 4707 4708 Previous Release: 4709 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 4710 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 4711 Current Release: 4712 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 4713 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 4714 47152) iASL Compiler/Disassembler and Tools: 4716 4717iASL: Fixed a problem with the use of the Alias operator and Resource 4718Templates. The correct alias is now constructed and no error is emitted. 4719ACPICA BZ 738. 4720 4721iASL: Implemented the -I option to specify additional search directories 4722for 4723include files. Allows multiple additional search paths for include files. 4724Directories are searched in the order specified on the command line 4725(after 4726the local directory is searched.) ACPICA BZ 800. 4727 4728iASL: Fixed a problem where the full pathname for include files was not 4729emitted for warnings/errors. This caused the IDE support to not work 4730properly. ACPICA BZ 765. 4731 4732iASL: Implemented the -@ option to specify a Windows-style response file 4733containing additional command line options. ACPICA BZ 801. 4734 4735AcpiExec: Added support to load multiple AML files simultaneously (such 4736as 4737a 4738DSDT and multiple SSDTs). Also added support for wildcards within the AML 4739pathname. These features allow all machine tables to be easily loaded and 4740debugged together. ACPICA BZ 804. 4741 4742Disassembler: Added missing support for disassembly of HEST table Error 4743Bank 4744subtables. 4745 4746---------------------------------------- 474730 July 2009. Summary of changes for version 20090730: 4748 4749The ACPI 4.0 implementation for ACPICA is complete with this release. 4750 47511) ACPI CA Core Subsystem: 4752 4753ACPI 4.0: Added header file support for all new and changed ACPI tables. 4754Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 4755new 4756for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 4757BERT, 4758EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 4759There 4760have been some ACPI 4.0 changes to other existing tables. Split the large 4761actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 4762 4763ACPI 4.0: Implemented predefined name validation for all new names. There 4764are 476531 new names in ACPI 4.0. The predefined validation module was split into 4766two 4767files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 4768 4769Implemented support for so-called "module-level executable code". This is 4770executable AML code that exists outside of any control method and is 4771intended 4772to be executed at table load time. Although illegal since ACPI 2.0, this 4773type 4774of code still exists and is apparently still being created. Blocks of 4775this 4776code are now detected and executed as intended. Currently, the code 4777blocks 4778must exist under either an If, Else, or While construct; these are the 4779typical cases seen in the field. ACPICA BZ 762. Lin Ming. 4780 4781Implemented an automatic dynamic repair for predefined names that return 4782nested Package objects. This applies to predefined names that are defined 4783to 4784return a variable-length Package of sub-packages. If the number of sub- 4785packages is one, BIOS code is occasionally seen that creates a simple 4786single 4787package with no sub-packages. This code attempts to fix the problem by 4788wrapping a new package object around the existing package. These methods 4789can 4790be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 4791BZ 4792790. 4793 4794Fixed a regression introduced in 20090625 for the AcpiGetDevices 4795interface. 4796The _HID/_CID matching was broken and no longer matched IDs correctly. 4797ACPICA 4798BZ 793. 4799 4800Fixed a problem with AcpiReset where the reset would silently fail if the 4801register was one of the protected I/O ports. AcpiReset now bypasses the 4802port 4803validation mechanism. This may eventually be driven into the 4804AcpiRead/Write 4805interfaces. 4806 4807Fixed a regression related to the recent update of the AcpiRead/Write 4808interfaces. A sleep/suspend could fail if the optional PM2 Control 4809register 4810does not exist during an attempt to write the Bus Master Arbitration bit. 4811(However, some hosts already delete the code that writes this bit, and 4812the 4813code may in fact be obsolete at this date.) ACPICA BZ 799. 4814 4815Fixed a problem where AcpiTerminate could fault if inadvertently called 4816twice 4817in succession. ACPICA BZ 795. 4818 4819Example Code and Data Size: These are the sizes for the OS-independent 4820acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4821debug version of the code includes the debug output trace mechanism and 4822has a 4823much larger code and data size. 4824 4825 Previous Release: 4826 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 4827 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 4828 Current Release: 4829 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 4830 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 4831 48322) iASL Compiler/Disassembler and Tools: 4833 4834ACPI 4.0: Implemented disassembler support for all new ACPI tables and 4835changes to existing tables. ACPICA BZ 775. 4836 4837---------------------------------------- 483825 June 2009. Summary of changes for version 20090625: 4839 4840The ACPI 4.0 Specification was released on June 16 and is available at 4841www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 4842continue for the next few releases. 4843 48441) ACPI CA Core Subsystem: 4845 4846ACPI 4.0: Implemented interpreter support for the IPMI operation region 4847address space. Includes support for bi-directional data buffers and an 4848IPMI 4849address space handler (to be installed by an IPMI device driver.) ACPICA 4850BZ 4851773. Lin Ming. 4852 4853ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 4854Includes 4855support in both the header files and the disassembler. 4856 4857Completed a major update for the AcpiGetObjectInfo external interface. 4858Changes include: 4859 - Support for variable, unlimited length HID, UID, and CID strings. 4860 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 4861etc.) 4862 - Call the _SxW power methods on behalf of a device object. 4863 - Determine if a device is a PCI root bridge. 4864 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 4865These changes will require an update to all callers of this interface. 4866See 4867the updated ACPICA Programmer Reference for details. One new source file 4868has 4869been added - utilities/utids.c. ACPICA BZ 368, 780. 4870 4871Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 4872transfers. The Value parameter has been extended from 32 bits to 64 bits 4873in 4874order to support new ACPI 4.0 tables. These changes will require an 4875update 4876to 4877all callers of these interfaces. See the ACPICA Programmer Reference for 4878details. ACPICA BZ 768. 4879 4880Fixed several problems with AcpiAttachData. The handler was not invoked 4881when 4882the host node was deleted. The data sub-object was not automatically 4883deleted 4884when the host node was deleted. The interface to the handler had an 4885unused 4886parameter, this was removed. ACPICA BZ 778. 4887 4888Enhanced the function that dumps ACPI table headers. All non-printable 4889characters in the string fields are now replaced with '?' (Signature, 4890OemId, 4891OemTableId, and CompilerId.) ACPI tables with non-printable characters in 4892these fields are occasionally seen in the field. ACPICA BZ 788. 4893 4894Fixed a problem with predefined method repair code where the code that 4895attempts to repair/convert an object of incorrect type is only executed 4896on 4897the first time the predefined method is called. The mechanism that 4898disables 4899warnings on subsequent calls was interfering with the repair mechanism. 4900ACPICA BZ 781. 4901 4902Fixed a possible memory leak in the predefined validation/repair code 4903when 4904a 4905buffer is automatically converted to an expected string object. 4906 4907Removed obsolete 16-bit files from the distribution and from the current 4908git 4909tree head. ACPICA BZ 776. 4910 4911Example Code and Data Size: These are the sizes for the OS-independent 4912acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4913debug version of the code includes the debug output trace mechanism and 4914has a 4915much larger code and data size. 4916 4917 Previous Release: 4918 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 4919 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 4920 Current Release: 4921 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 4922 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 4923 49242) iASL Compiler/Disassembler and Tools: 4925 4926ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 4927operation region keyword. ACPICA BZ 771, 772. Lin Ming. 4928 4929ACPI 4.0: iASL - implemented compile-time validation support for all new 4930predefined names and control methods (31 total). ACPICA BZ 769. 4931 4932---------------------------------------- 493321 May 2009. Summary of changes for version 20090521: 4934 49351) ACPI CA Core Subsystem: 4936 4937Disabled the preservation of the SCI enable bit in the PM1 control 4938register. 4939The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 4940to 4941be 4942a "preserved" bit - "OSPM always preserves this bit position", section 49434.7.3.2.1. However, some machines fail if this bit is in fact preserved 4944because the bit needs to be explicitly set by the OS as a workaround. No 4945machines fail if the bit is not preserved. Therefore, ACPICA no longer 4946attempts to preserve this bit. 4947 4948Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 4949incorrectly formed _PRT package could cause a fault. Added validation to 4950ensure that each package element is actually a sub-package. 4951 4952Implemented a new interface to install or override a single control 4953method, 4954AcpiInstallMethod. This interface is useful when debugging in order to 4955repair 4956an existing method or to install a missing method without having to 4957override 4958the entire ACPI table. See the ACPICA Programmer Reference for use and 4959examples. Lin Ming, Bob Moore. 4960 4961Fixed several reference count issues with the DdbHandle object that is 4962created from a Load or LoadTable operator. Prevent premature deletion of 4963the 4964object. Also, mark the object as invalid once the table has been 4965unloaded. 4966This is needed because the handle itself may not be deleted after the 4967table 4968unload, depending on whether it has been stored in a named object by the 4969caller. Lin Ming. 4970 4971Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 4972mutexes of the same sync level are acquired but then not released in 4973strict 4974opposite order, the internally maintained Current Sync Level becomes 4975confused 4976and can cause subsequent execution errors. ACPICA BZ 471. 4977 4978Changed the allowable release order for ASL mutex objects. The ACPI 4.0 4979specification has been changed to make the SyncLevel for mutex objects 4980more 4981useful. When releasing a mutex, the SyncLevel of the mutex must now be 4982the 4983same as the current sync level. This makes more sense than the previous 4984rule 4985(SyncLevel less than or equal). This change updates the code to match the 4986specification. 4987 4988Fixed a problem with the local version of the AcpiOsPurgeCache function. 4989The 4990(local) cache must be locked during all cache object deletions. Andrew 4991Baumann. 4992 4993Updated the Load operator to use operation region interfaces. This 4994replaces 4995direct memory mapping with region access calls. Now, all region accesses 4996go 4997through the installed region handler as they should. 4998 4999Simplified and optimized the NsGetNextNode function. Reduced parameter 5000count 5001and reduced code for this frequently used function. 5002 5003Example Code and Data Size: These are the sizes for the OS-independent 5004acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5005debug version of the code includes the debug output trace mechanism and 5006has a 5007much larger code and data size. 5008 5009 Previous Release: 5010 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5011 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5012 Current Release: 5013 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5014 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5015 50162) iASL Compiler/Disassembler and Tools: 5017 5018Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 5019problems 5020with sub-table disassembly and handling invalid sub-tables. Attempt 5021recovery 5022after an invalid sub-table ID. 5023 5024---------------------------------------- 502522 April 2009. Summary of changes for version 20090422: 5026 50271) ACPI CA Core Subsystem: 5028 5029Fixed a compatibility issue with the recently released I/O port 5030protection 5031mechanism. For windows compatibility, 1) On a port protection violation, 5032simply ignore the request and do not return an exception (allow the 5033control 5034method to continue execution.) 2) If only part of the request overlaps a 5035protected port, read/write the individual ports that are not protected. 5036Linux 5037BZ 13036. Lin Ming 5038 5039Enhanced the execution of the ASL/AML BreakPoint operator so that it 5040actually 5041breaks into the AML debugger if the debugger is present. This matches the 5042ACPI-defined behavior. 5043 5044Fixed several possible warnings related to the use of the configurable 5045ACPI_THREAD_ID. This type can now be configured as either an integer or a 5046pointer with no warnings. Also fixes several warnings in printf-like 5047statements for the 64-bit build when the type is configured as a pointer. 5048ACPICA BZ 766, 767. 5049 5050Fixed a number of possible warnings when compiling with gcc 4+ (depending 5051on 5052warning options.) Examples include printf formats, aliasing, unused 5053globals, 5054missing prototypes, missing switch default statements, use of non-ANSI 5055library functions, use of non-ANSI constructs. See generate/unix/Makefile 5056for 5057a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 5058 5059Example Code and Data Size: These are the sizes for the OS-independent 5060acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5061debug version of the code includes the debug output trace mechanism and 5062has a 5063much larger code and data size. 5064 5065 Previous Release: 5066 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5067 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5068 Current Release: 5069 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5070 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5071 50722) iASL Compiler/Disassembler and Tools: 5073 5074iASL: Fixed a generation warning from Bison 2.3 and fixed several 5075warnings 5076on 5077the 64-bit build. 5078 5079iASL: Fixed a problem where the Unix/Linux versions of the compiler could 5080not 5081correctly digest Windows/DOS formatted files (with CR/LF). 5082 5083iASL: Added a new option for "quiet mode" (-va) that produces only the 5084compilation summary, not individual errors and warnings. Useful for large 5085batch compilations. 5086 5087AcpiExec: Implemented a new option (-z) to enable a forced 5088semaphore/mutex 5089timeout that can be used to detect hang conditions during execution of 5090AML 5091code (includes both internal semaphores and AML-defined mutexes and 5092events.) 5093 5094Added new makefiles for the generation of acpica in a generic unix-like 5095environment. These makefiles are intended to generate the acpica tools 5096and 5097utilities from the original acpica git source tree structure. 5098 5099Test Suites: Updated and cleaned up the documentation files. Updated the 5100copyrights to 2009, affecting all source files. Use the new version of 5101iASL 5102with quiet mode. Increased the number of available semaphores in the 5103Windows 5104OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 5105added 5106an alternate implementation of the semaphore timeout to allow aslts to 5107execute fully on Cygwin. 5108 5109---------------------------------------- 511020 March 2009. Summary of changes for version 20090320: 5111 51121) ACPI CA Core Subsystem: 5113 5114Fixed a possible race condition between AcpiWalkNamespace and dynamic 5115table 5116unloads. Added a reader/writer locking mechanism to allow multiple 5117concurrent 5118namespace walks (readers), but block a dynamic table unload until it can 5119gain 5120exclusive write access to the namespace. This fixes a problem where a 5121table 5122unload could (possibly catastrophically) delete the portion of the 5123namespace 5124that is currently being examined by a walk. Adds a new file, utlock.c, 5125that 5126implements the reader/writer lock mechanism. ACPICA BZ 749. 5127 5128Fixed a regression introduced in version 20090220 where a change to the 5129FADT 5130handling could cause the ACPICA subsystem to access non-existent I/O 5131ports. 5132 5133Modified the handling of FADT register and table (FACS/DSDT) addresses. 5134The 5135FADT can contain both 32-bit and 64-bit versions of these addresses. 5136Previously, the 64-bit versions were favored, meaning that if both 32 and 513764 5138versions were valid, but not equal, the 64-bit version was used. This was 5139found to cause some machines to fail. Now, in this case, the 32-bit 5140version 5141is used instead. This now matches the Windows behavior. 5142 5143Implemented a new mechanism to protect certain I/O ports. Provides 5144Microsoft 5145compatibility and protects the standard PC I/O ports from access via AML 5146code. Adds a new file, hwvalid.c 5147 5148Fixed a possible extraneous warning message from the FADT support. The 5149message warns of a 32/64 length mismatch between the legacy and GAS 5150definitions for a register. 5151 5152Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 5153is 5154made obsolete by the port protection mechanism above. It was previously 5155used 5156to validate the entire address range of an operation region, which could 5157be 5158incorrect if the range included illegal ports, but fields within the 5159operation region did not actually access those ports. Validation is now 5160performed on a per-field basis instead of the entire region. 5161 5162Modified the handling of the PM1 Status Register ignored bit (bit 11.) 5163Ignored bits must be "preserved" according to the ACPI spec. Usually, 5164this 5165means a read/modify/write when writing to the register. However, for 5166status 5167registers, writing a one means clear the event. Writing a zero means 5168preserve 5169the event (do not clear.) This behavior is clarified in the ACPI 4.0 5170spec, 5171and the ACPICA code now simply always writes a zero to the ignored bit. 5172 5173Modified the handling of ignored bits for the PM1 A/B Control Registers. 5174As 5175per the ACPI specification, for the control registers, preserve 5176(read/modify/write) all bits that are defined as either reserved or 5177ignored. 5178 5179Updated the handling of write-only bits in the PM1 A/B Control Registers. 5180When reading the register, zero the write-only bits as per the ACPI spec. 5181ACPICA BZ 443. Lin Ming. 5182 5183Removed "Linux" from the list of supported _OSI strings. Linux no longer 5184wants to reply true to this request. The Windows strings are the only 5185paths 5186through the AML that are tested and known to work properly. 5187 5188 Previous Release: 5189 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5190 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5191 Current Release: 5192 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5193 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5194 51952) iASL Compiler/Disassembler and Tools: 5196 5197Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 5198and 5199aetables.c 5200 5201---------------------------------------- 520220 February 2009. Summary of changes for version 20090220: 5203 52041) ACPI CA Core Subsystem: 5205 5206Optimized the ACPI register locking. Removed locking for reads from the 5207ACPI 5208bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 5209is 5210not required when reading the single-bit registers. The 5211AcpiGetRegisterUnlocked function is no longer needed and has been 5212removed. 5213This will improve performance for reads on these registers. ACPICA BZ 5214760. 5215 5216Fixed the parameter validation for AcpiRead/Write. Now return 5217AE_BAD_PARAMETER if the input register pointer is null, and 5218AE_BAD_ADDRESS 5219if 5220the register has an address of zero. Previously, these cases simply 5221returned 5222AE_OK. For optional registers such as PM1B status/enable/control, the 5223caller 5224should check for a valid register address before calling. ACPICA BZ 748. 5225 5226Renamed the external ACPI bit register access functions. Renamed 5227AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 5228functions. The new names are AcpiReadBitRegister and 5229AcpiWriteBitRegister. 5230Also, restructured the code for these functions by simplifying the code 5231path 5232and condensing duplicate code to reduce code size. 5233 5234Added new functions to transparently handle the possibly split PM1 A/B 5235registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 5236functions 5237now handle the split registers for PM1 Status, Enable, and Control. 5238ACPICA 5239BZ 5240746. 5241 5242Added a function to handle the PM1 control registers, 5243AcpiHwWritePm1Control. 5244This function writes both of the PM1 control registers (A/B). These 5245registers 5246are different than the PM1 A/B status and enable registers in that 5247different 5248values can be written to the A/B registers. Most notably, the SLP_TYP 5249bits 5250can be different, as per the values returned from the _Sx predefined 5251methods. 5252 5253Removed an extra register write within AcpiHwClearAcpiStatus. This 5254function 5255was writing an optional PM1B status register twice. The existing call to 5256the 5257low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 5258A/B 5259register. ACPICA BZ 751. 5260 5261Split out the PM1 Status registers from the FADT. Added new globals for 5262these 5263registers (A/B), similar to the way the PM1 Enable registers are handled. 5264Instead of overloading the FADT Event Register blocks. This makes the 5265code 5266clearer and less prone to error. 5267 5268Fixed the warning message for when the platform contains too many ACPI 5269tables 5270for the default size of the global root table data structure. The 5271calculation 5272for the truncation value was incorrect. 5273 5274Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 5275obsolete macro, since it is now a simple reference to ->common.type. 5276There 5277were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 5278 5279Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 5280TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 5281simply SLEEP_TYPE. ACPICA BZ 754. 5282 5283Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 5284function is only needed on 64-bit host operating systems and is thus not 5285included for 32-bit hosts. 5286 5287Debug output: print the input and result for invocations of the _OSI 5288reserved 5289control method via the ACPI_LV_INFO debug level. Also, reduced some of 5290the 5291verbosity of this debug level. Len Brown. 5292 5293Example Code and Data Size: These are the sizes for the OS-independent 5294acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5295debug version of the code includes the debug output trace mechanism and 5296has a 5297much larger code and data size. 5298 5299 Previous Release: 5300 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5301 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5302 Current Release: 5303 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 5304 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 5305 53062) iASL Compiler/Disassembler and Tools: 5307 5308Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 5309various legal performance profiles. 5310 5311---------------------------------------- 531223 January 2009. Summary of changes for version 20090123: 5313 53141) ACPI CA Core Subsystem: 5315 5316Added the 2009 copyright to all module headers and signons. This affects 5317virtually every file in the ACPICA core subsystem, the iASL compiler, and 5318the tools/utilities. 5319 5320Implemented a change to allow the host to override any ACPI table, 5321including 5322dynamically loaded tables. Previously, only the DSDT could be replaced by 5323the 5324host. With this change, the AcpiOsTableOverride interface is called for 5325each 5326table found in the RSDT/XSDT during ACPICA initialization, and also 5327whenever 5328a table is dynamically loaded via the AML Load operator. 5329 5330Updated FADT flag definitions, especially the Boot Architecture flags. 5331 5332Debugger: For the Find command, automatically pad the input ACPI name 5333with 5334underscores if the name is shorter than 4 characters. This enables a 5335match 5336with the actual namespace entry which is itself padded with underscores. 5337 5338Example Code and Data Size: These are the sizes for the OS-independent 5339acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5340debug version of the code includes the debug output trace mechanism and 5341has a 5342much larger code and data size. 5343 5344 Previous Release: 5345 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5346 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5347 Current Release: 5348 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5349 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5350 53512) iASL Compiler/Disassembler and Tools: 5352 5353Fix build error under Bison-2.4. 5354 5355Dissasembler: Enhanced FADT support. Added decoding of the Boot 5356Architecture 5357flags. Now decode all flags, regardless of the FADT version. Flag output 5358includes the FADT version which first defined each flag. 5359 5360The iASL -g option now dumps the RSDT to a file (in addition to the FADT 5361and 5362DSDT). Windows only. 5363 5364---------------------------------------- 536504 December 2008. Summary of changes for version 20081204: 5366 53671) ACPI CA Core Subsystem: 5368 5369The ACPICA Programmer Reference has been completely updated and revamped 5370for 5371this release. This includes updates to the external interfaces, OSL 5372interfaces, the overview sections, and the debugger reference. 5373 5374Several new ACPICA interfaces have been implemented and documented in the 5375programmer reference: 5376AcpiReset - Writes the reset value to the FADT-defined reset register. 5377AcpiDisableAllGpes - Disable all available GPEs. 5378AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 5379AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 5380AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 5381AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 5382AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 5383 5384Most of the public ACPI hardware-related interfaces have been moved to a 5385new 5386file, components/hardware/hwxface.c 5387 5388Enhanced the FADT parsing and low-level ACPI register access: The ACPI 5389register lengths within the FADT are now used, and the low level ACPI 5390register access no longer hardcodes the ACPI register lengths. Given that 5391there may be some risk in actually trusting the FADT register lengths, a 5392run- 5393time option was added to fall back to the default hardcoded lengths if 5394the 5395FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 5396option is set to true for now, and a warning is issued if a suspicious 5397FADT 5398register length is overridden with the default value. 5399 5400Fixed a reference count issue in NsRepairObject. This problem was 5401introduced 5402in version 20081031 as part of a fix to repair Buffer objects within 5403Packages. Lin Ming. 5404 5405Added semaphore support to the Linux/Unix application OS-services layer 5406(OSL). ACPICA BZ 448. Lin Ming. 5407 5408Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 5409will 5410be implemented in the OSL, or will binary semaphores be used instead. 5411 5412Example Code and Data Size: These are the sizes for the OS-independent 5413acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5414debug version of the code includes the debug output trace mechanism and 5415has a 5416much larger code and data size. 5417 5418 Previous Release: 5419 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5420 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5421 Current Release: 5422 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5423 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5424 54252) iASL Compiler/Disassembler and Tools: 5426 5427iASL: Completed the '-e' option to include additional ACPI tables in 5428order 5429to 5430aid with disassembly and External statement generation. ACPICA BZ 742. 5431Lin 5432Ming. 5433 5434iASL: Removed the "named object in while loop" error. The compiler cannot 5435determine how many times a loop will execute. ACPICA BZ 730. 5436 5437Disassembler: Implemented support for FADT revision 2 (MS extension). 5438ACPICA 5439BZ 743. 5440 5441Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 5442MCFG). 5443 5444---------------------------------------- 544531 October 2008. Summary of changes for version 20081031: 5446 54471) ACPI CA Core Subsystem: 5448 5449Restructured the ACPICA header files into public/private. acpi.h now 5450includes 5451only the "public" acpica headers. All other acpica headers are "private" 5452and 5453should not be included by acpica users. One new file, accommon.h is used 5454to 5455include the commonly used private headers for acpica code generation. 5456Future 5457plans include moving all private headers to a new subdirectory. 5458 5459Implemented an automatic Buffer->String return value conversion for 5460predefined ACPI methods. For these methods (such as _BIF), added 5461automatic 5462conversion for return objects that are required to be a String, but a 5463Buffer 5464was found instead. This can happen when reading string battery data from 5465an 5466operation region, because it used to be difficult to convert the data 5467from 5468buffer to string from within the ASL. Ensures that the host OS is 5469provided 5470with a valid null-terminated string. Linux BZ 11822. 5471 5472Updated the FACS waking vector interfaces. Split 5473AcpiSetFirmwareWakingVector 5474into two: one for the 32-bit vector, another for the 64-bit vector. This 5475is 5476required because the host OS must setup the wake much differently for 5477each 5478vector (real vs. protected mode, etc.) and the interface itself should 5479not 5480be 5481deciding which vector to use. Also, eliminated the 5482GetFirmwareWakingVector 5483interface, as it served no purpose (only the firmware reads the vector, 5484OS 5485only writes the vector.) ACPICA BZ 731. 5486 5487Implemented a mechanism to escape infinite AML While() loops. Added a 5488loop 5489counter to force exit from AML While loops if the count becomes too 5490large. 5491This can occur in poorly written AML when the hardware does not respond 5492within a while loop and the loop does not implement a timeout. The 5493maximum 5494loop count is configurable. A new exception code is returned when a loop 5495is 5496broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 5497 5498Optimized the execution of AML While loops. Previously, a control state 5499object was allocated and freed for each execution of the loop. The 5500optimization is to simply reuse the control state for each iteration. 5501This 5502speeds up the raw loop execution time by about 5%. 5503 5504Enhanced the implicit return mechanism. For Windows compatibility, return 5505an 5506implicit integer of value zero for methods that contain no executable 5507code. 5508Such methods are seen in the field as stubs (presumably), and can cause 5509drivers to fail if they expect a return value. Lin Ming. 5510 5511Allow multiple backslashes as root prefixes in namepaths. In a fully 5512qualified namepath, allow multiple backslash prefixes. This can happen 5513(and 5514is seen in the field) because of the use of a double-backslash in strings 5515(since backslash is the escape character) causing confusion. ACPICA BZ 5516739 5517Lin Ming. 5518 5519Emit a warning if two different FACS or DSDT tables are discovered in the 5520FADT. Checks if there are two valid but different addresses for the FACS 5521and 5522DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 5523 5524Consolidated the method argument count validation code. Merged the code 5525that 5526validates control method argument counts into the predefined validation 5527module. Eliminates possible multiple warnings for incorrect argument 5528counts. 5529 5530Implemented ACPICA example code. Includes code for ACPICA initialization, 5531handler installation, and calling a control method. Available at 5532source/tools/examples. 5533 5534Added a global pointer for FACS table to simplify internal FACS access. 5535Use 5536the global pointer instead of using AcpiGetTableByIndex for each FACS 5537access. 5538This simplifies the code for the Global Lock and the Firmware Waking 5539Vector(s). 5540 5541Example Code and Data Size: These are the sizes for the OS-independent 5542acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5543debug version of the code includes the debug output trace mechanism and 5544has a 5545much larger code and data size. 5546 5547 Previous Release: 5548 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5549 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5550 Current Release: 5551 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5552 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5553 55542) iASL Compiler/Disassembler and Tools: 5555 5556iASL: Improved disassembly of external method calls. Added the -e option 5557to 5558allow the inclusion of additional ACPI tables to help with the 5559disassembly 5560of 5561method invocations and the generation of external declarations during the 5562disassembly. Certain external method invocations cannot be disassembled 5563properly without the actual declaration of the method. Use the -e option 5564to 5565include the table where the external method(s) are actually declared. 5566Most 5567useful for disassembling SSDTs that make method calls back to the master 5568DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 5569-d 5570-e dsdt.aml ssdt1.aml 5571 5572iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 5573problem where the use of an alias within a namepath would result in a not 5574found error or cause the compiler to fault. Also now allows forward 5575references from the Alias operator itself. ACPICA BZ 738. 5576 5577---------------------------------------- 557826 September 2008. Summary of changes for version 20080926: 5579 55801) ACPI CA Core Subsystem: 5581 5582Designed and implemented a mechanism to validate predefined ACPI methods 5583and 5584objects. This code validates the predefined ACPI objects (objects whose 5585names 5586start with underscore) that appear in the namespace, at the time they are 5587evaluated. The argument count and the type of the returned object are 5588validated against the ACPI specification. The purpose of this validation 5589is 5590to detect problems with the BIOS-implemented predefined ACPI objects 5591before 5592the results are returned to the ACPI-related drivers. Future enhancements 5593may 5594include actual repair of incorrect return objects where possible. Two new 5595files are nspredef.c and acpredef.h. 5596 5597Fixed a fault in the AML parser if a memory allocation fails during the 5598Op 5599completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 5600 5601Fixed an issue with implicit return compatibility. This change improves 5602the 5603implicit return mechanism to be more compatible with the MS interpreter. 5604Lin 5605Ming, ACPICA BZ 349. 5606 5607Implemented support for zero-length buffer-to-string conversions. Allow 5608zero 5609length strings during interpreter buffer-to-string conversions. For 5610example, 5611during the ToDecimalString and ToHexString operators, as well as implicit 5612conversions. Fiodor Suietov, ACPICA BZ 585. 5613 5614Fixed two possible memory leaks in the error exit paths of 5615AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 5616are 5617similar in that they use a stack of state objects in order to eliminate 5618recursion. The stack must be fully unwound and deallocated if an error 5619occurs. Lin Ming. ACPICA BZ 383. 5620 5621Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 5622global 5623ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 5624Moore ACPICA BZ 442. 5625 5626Removed the obsolete version number in module headers. Removed the 5627"$Revision" number that appeared in each module header. This version 5628number 5629was useful under SourceSafe and CVS, but has no meaning under git. It is 5630not 5631only incorrect, it could also be misleading. 5632 5633Example Code and Data Size: These are the sizes for the OS-independent 5634acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5635debug version of the code includes the debug output trace mechanism and 5636has a 5637much larger code and data size. 5638 5639 Previous Release: 5640 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5641 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 5642 Current Release: 5643 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5644 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5645 5646---------------------------------------- 564729 August 2008. Summary of changes for version 20080829: 5648 56491) ACPI CA Core Subsystem: 5650 5651Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 5652Reference. Changes include the elimination of cheating on the Object 5653field 5654for the DdbHandle subtype, addition of a reference class field to 5655differentiate the various reference types (instead of an AML opcode), and 5656the 5657cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 5658 5659Reduce an error to a warning for an incorrect method argument count. 5660Previously aborted with an error if too few arguments were passed to a 5661control method via the external ACPICA interface. Now issue a warning 5662instead 5663and continue. Handles the case where the method inadvertently declares 5664too 5665many arguments, but does not actually use the extra ones. Applies mainly 5666to 5667the predefined methods. Lin Ming. Linux BZ 11032. 5668 5669Disallow the evaluation of named object types with no intrinsic value. 5670Return 5671AE_TYPE for objects that have no value and therefore evaluation is 5672undefined: 5673Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 5674of 5675these types were allowed, but an exception would be generated at some 5676point 5677during the evaluation. Now, the error is generated up front. 5678 5679Fixed a possible memory leak in the AcpiNsGetExternalPathname function 5680(nsnames.c). Fixes a leak in the error exit path. 5681 5682Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 5683debug 5684levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 5685ACPI_EXCEPTION 5686interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 5687ACPI_LV_EVENTS. 5688 5689Removed obsolete and/or unused exception codes from the acexcep.h header. 5690There is the possibility that certain device drivers may be affected if 5691they 5692use any of these exceptions. 5693 5694The ACPICA documentation has been added to the public git source tree, 5695under 5696acpica/documents. Included are the ACPICA programmer reference, the iASL 5697compiler reference, and the changes.txt release logfile. 5698 5699Example Code and Data Size: These are the sizes for the OS-independent 5700acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5701debug version of the code includes the debug output trace mechanism and 5702has a 5703much larger code and data size. 5704 5705 Previous Release: 5706 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5707 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 5708 Current Release: 5709 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5710 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 5711 57122) iASL Compiler/Disassembler and Tools: 5713 5714Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 5715defines _SCP with 3 arguments. Previous versions defined it with only 1 5716argument. iASL now allows both definitions. 5717 5718iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 5719zero- 5720length subtables when disassembling ACPI tables. Also fixed a couple of 5721errors where a full 16-bit table type field was not extracted from the 5722input 5723properly. 5724 5725acpisrc: Improve comment counting mechanism for generating source code 5726statistics. Count first and last lines of multi-line comments as 5727whitespace, 5728not comment lines. Handle Linux legal header in addition to standard 5729acpica 5730header. 5731 5732---------------------------------------- 5733 573429 July 2008. Summary of changes for version 20080729: 5735 57361) ACPI CA Core Subsystem: 5737 5738Fix a possible deadlock in the GPE dispatch. Remove call to 5739AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 5740attempt 5741to acquire the GPE lock but can deadlock since the GPE lock is already 5742held 5743at dispatch time. This code was introduced in version 20060831 as a 5744response 5745to Linux BZ 6881 and has since been removed from Linux. 5746 5747Add a function to dereference returned reference objects. Examines the 5748return 5749object from a call to AcpiEvaluateObject. Any Index or RefOf references 5750are 5751automatically dereferenced in an attempt to return something useful 5752(these 5753reference types cannot be converted into an external ACPI_OBJECT.) 5754Provides 5755MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 5756 5757x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 5758subtables for the MADT and one new subtable for the SRAT. Includes 5759disassembler and AcpiSrc support. Data from the Intel 64 Architecture 5760x2APIC 5761Specification, June 2008. 5762 5763Additional error checking for pathname utilities. Add error check after 5764all 5765calls to AcpiNsGetPathnameLength. Add status return from 5766AcpiNsBuildExternalPath and check after all calls. Add parameter 5767validation 5768to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 5769 5770Return status from the global init function AcpiUtGlobalInitialize. This 5771is 5772used by both the kernel subsystem and the utilities such as iASL 5773compiler. 5774The function could possibly fail when the caches are initialized. Yang 5775Yi. 5776 5777Add a function to decode reference object types to strings. Created for 5778improved error messages. 5779 5780Improve object conversion error messages. Better error messages during 5781object 5782conversion from internal to the external ACPI_OBJECT. Used for external 5783calls 5784to AcpiEvaluateObject. 5785 5786Example Code and Data Size: These are the sizes for the OS-independent 5787acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5788debug version of the code includes the debug output trace mechanism and 5789has a 5790much larger code and data size. 5791 5792 Previous Release: 5793 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 5794 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 5795 Current Release: 5796 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5797 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 5798 57992) iASL Compiler/Disassembler and Tools: 5800 5801Debugger: fix a possible hang when evaluating non-methods. Fixes a 5802problem 5803introduced in version 20080701. If the object being evaluated (via 5804execute 5805command) is not a method, the debugger can hang while trying to obtain 5806non- 5807existent parameters. 5808 5809iASL: relax error for using reserved "_T_x" identifiers. These names can 5810appear in a disassembled ASL file if they were emitted by the original 5811compiler. Instead of issuing an error or warning and forcing the user to 5812manually change these names, issue a remark instead. 5813 5814iASL: error if named object created in while loop. Emit an error if any 5815named 5816object is created within a While loop. If allowed, this code will 5817generate 5818a 5819run-time error on the second iteration of the loop when an attempt is 5820made 5821to 5822create the same named object twice. ACPICA bugzilla 730. 5823 5824iASL: Support absolute pathnames for include files. Add support for 5825absolute 5826pathnames within the Include operator. previously, only relative 5827pathnames 5828were supported. 5829 5830iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 5831Descriptor. 5832The ACPI spec requires one interrupt minimum. BZ 423 5833 5834iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 5835Handles the case for the Interrupt Resource Descriptor where 5836the ResourceSource argument is omitted but ResourceSourceIndex 5837is present. Now leave room for the Index. BZ 426 5838 5839iASL: Prevent error message if CondRefOf target does not exist. Fixes 5840cases 5841where an error message is emitted if the target does not exist. BZ 516 5842 5843iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 5844(get ACPI tables on Windows). This was apparently broken in version 584520070919. 5846 5847AcpiXtract: Handle EOF while extracting data. Correctly handle the case 5848where 5849the EOF happens immediately after the last table in the input file. Print 5850completion message. Previously, no message was displayed in this case. 5851 5852---------------------------------------- 585301 July 2008. Summary of changes for version 20080701: 5854 58550) Git source tree / acpica.org 5856 5857Fixed a problem where a git-clone from http would not transfer the entire 5858source tree. 5859 58601) ACPI CA Core Subsystem: 5861 5862Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 5863enable bit. Now performs a read-change-write of the enable register 5864instead 5865of simply writing out the cached enable mask. This will prevent 5866inadvertent 5867enabling of GPEs if a rogue GPE is received during initialization (before 5868GPE 5869handlers are installed.) 5870 5871Implemented a copy for dynamically loaded tables. Previously, dynamically 5872loaded tables were simply mapped - but on some machines this memory is 5873corrupted after suspend. Now copy the table to a local buffer. For the 5874OpRegion case, added checksum verify. Use the table length from the table 5875header, not the region length. For the Buffer case, use the table length 5876also. Dennis Noordsij, Bob Moore. BZ 10734 5877 5878Fixed a problem where the same ACPI table could not be dynamically loaded 5879and 5880unloaded more than once. Without this change, a table cannot be loaded 5881again 5882once it has been loaded/unloaded one time. The current mechanism does not 5883unregister a table upon an unload. During a load, if the same table is 5884found, 5885this no longer returns an exception. BZ 722 5886 5887Fixed a problem where the wrong descriptor length was calculated for the 5888EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 5889EndTag 5890are calculated as 12 bytes long, but the actual length in the internal 5891descriptor is 16 because of the round-up to 8 on the 64-bit build. 5892Reported 5893by Linn Crosetto. BZ 728 5894 5895Fixed a possible memory leak in the Unload operator. The DdbHandle 5896returned 5897by Load() did not have its reference count decremented during unload, 5898leading 5899to a memory leak. Lin Ming. BZ 727 5900 5901Fixed a possible memory leak when deleting thermal/processor objects. Any 5902associated notify handlers (and objects) were not being deleted. Fiodor 5903Suietov. BZ 506 5904 5905Fixed the ordering of the ASCII names in the global mutex table to match 5906the 5907actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 5908only. 5909Vegard Nossum. BZ 726 5910 5911Enhanced the AcpiGetObjectInfo interface to return the number of required 5912arguments if the object is a control method. Added this call to the 5913debugger 5914so the proper number of default arguments are passed to a method. This 5915prevents a warning when executing methods from AcpiExec. 5916 5917Added a check for an invalid handle in AcpiGetObjectInfo. Return 5918AE_BAD_PARAMETER if input handle is invalid. BZ 474 5919 5920Fixed an extraneous warning from exconfig.c on the 64-bit build. 5921 5922Example Code and Data Size: These are the sizes for the OS-independent 5923acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5924debug version of the code includes the debug output trace mechanism and 5925has a 5926much larger code and data size. 5927 5928 Previous Release: 5929 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 5930 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 5931 Current Release: 5932 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 5933 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 5934 59352) iASL Compiler/Disassembler and Tools: 5936 5937iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 5938resource descriptor names. 5939 5940iASL: Detect invalid ASCII characters in input (windows version). Removed 5941the 5942"-CF" flag from the flex compile, enables correct detection of non-ASCII 5943characters in the input. BZ 441 5944 5945iASL: Eliminate warning when result of LoadTable is not used. Eliminate 5946the 5947"result of operation not used" warning when the DDB handle returned from 5948LoadTable is not used. The warning is not needed. BZ 590 5949 5950AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 5951method 5952to 5953pass address of table to the AML. Added option to disable OpRegion 5954simulation 5955to allow creation of an OpRegion with a real address that was passed to 5956_CFG. 5957All of this allows testing of the Load and Unload operators from 5958AcpiExec. 5959 5960Debugger: update tables command for unloaded tables. Handle unloaded 5961tables 5962and use the standard table header output routine. 5963 5964---------------------------------------- 596509 June 2008. Summary of changes for version 20080609: 5966 59671) ACPI CA Core Subsystem: 5968 5969Implemented a workaround for reversed _PRT entries. A significant number 5970of 5971BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 5972change dynamically detects and repairs this problem. Provides 5973compatibility 5974with MS ACPI. BZ 6859 5975 5976Simplified the internal ACPI hardware interfaces to eliminate the locking 5977flag parameter from Register Read/Write. Added a new external interface, 5978AcpiGetRegisterUnlocked. 5979 5980Fixed a problem where the invocation of a GPE control method could hang. 5981This 5982was a regression introduced in 20080514. The new method argument count 5983validation mechanism can enter an infinite loop when a GPE method is 5984dispatched. Problem fixed by removing the obsolete code that passed GPE 5985block 5986information to the notify handler via the control method parameter 5987pointer. 5988 5989Fixed a problem where the _SST execution status was incorrectly returned 5990to 5991the caller of AcpiEnterSleepStatePrep. This was a regression introduced 5992in 599320080514. _SST is optional and a NOT_FOUND exception should never be 5994returned. BZ 716 5995 5996Fixed a problem where a deleted object could be accessed from within the 5997AML 5998parser. This was a regression introduced in version 20080123 as a fix for 5999the 6000Unload operator. Lin Ming. BZ 10669 6001 6002Cleaned up the debug operand dump mechanism. Eliminated unnecessary 6003operands 6004and eliminated the use of a negative index in a loop. Operands are now 6005displayed in the correct order, not backwards. This also fixes a 6006regression 6007introduced in 20080514 on 64-bit systems where the elimination of 6008ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 6009715 6010 6011Fixed a possible memory leak in EvPciConfigRegionSetup where the error 6012exit 6013path did not delete a locally allocated structure. 6014 6015Updated definitions for the DMAR and SRAT tables to synchronize with the 6016current specifications. Includes disassembler support. 6017 6018Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 6019loop termination value was used. Loop terminated on iteration early, 6020missing 6021one mutex. Linn Crosetto 6022 6023Example Code and Data Size: These are the sizes for the OS-independent 6024acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6025debug version of the code includes the debug output trace mechanism and 6026has a 6027much larger code and data size. 6028 6029 Previous Release: 6030 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6031 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6032 Current Release: 6033 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6034 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6035 60362) iASL Compiler/Disassembler and Tools: 6037 6038Disassembler: Implemented support for EisaId() within _CID objects. Now 6039disassemble integer _CID objects back to EisaId invocations, including 6040multiple integers within _CID packages. Includes single-step support for 6041debugger also. 6042 6043Disassembler: Added support for DMAR and SRAT table definition changes. 6044 6045---------------------------------------- 604614 May 2008. Summary of changes for version 20080514: 6047 60481) ACPI CA Core Subsystem: 6049 6050Fixed a problem where GPEs were enabled too early during the ACPICA 6051initialization. This could lead to "handler not installed" errors on some 6052machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 6053This 6054ensures that all operation regions and devices throughout the namespace 6055have 6056been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 6057 6058Implemented a change to the enter sleep code. Moved execution of the _GTS 6059method to just before setting sleep enable bit. The execution was moved 6060from 6061AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 6062immediately before the SLP_EN bit is set, as per the ACPI specification. 6063Luming Yu, BZ 1653. 6064 6065Implemented a fix to disable unknown GPEs (2nd version). Now always 6066disable 6067the GPE, even if ACPICA thinks that that it is already disabled. It is 6068possible that the AML or some other code has enabled the GPE unbeknownst 6069to 6070the ACPICA code. 6071 6072Fixed a problem with the Field operator where zero-length fields would 6073return 6074an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 6075ASL 6076field declarations in Field(), BankField(), and IndexField(). BZ 10606. 6077 6078Implemented a fix for the Load operator, now load the table at the 6079namespace 6080root. This reverts a change introduced in version 20071019. The table is 6081now 6082loaded at the namespace root even though this goes against the ACPI 6083specification. This provides compatibility with other ACPI 6084implementations. 6085The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 6086Ming. 6087 6088Fixed a problem where ACPICA would not Load() tables with unusual 6089signatures. 6090Now ignore ACPI table signature for Load() operator. Only "SSDT" is 6091acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 6092Therefore, signature validation is worthless. Apparently MS ACPI accepts 6093such 6094signatures, ACPICA must be compatible. BZ 10454. 6095 6096Fixed a possible negative array index in AcpiUtValidateException. Added 6097NULL 6098fields to the exception string arrays to eliminate a -1 subtraction on 6099the 6100SubStatus field. 6101 6102Updated the debug tracking macros to reduce overall code and data size. 6103Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 6104instead of pointers to static strings. Jan Beulich and Bob Moore. 6105 6106Implemented argument count checking in control method invocation via 6107AcpiEvaluateObject. Now emit an error if too few arguments, warning if 6108too 6109many. This applies only to extern programmatic control method execution, 6110not 6111method-to-method calls within the AML. Lin Ming. 6112 6113Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 6114no 6115longer needed, especially with the removal of 16-bit support. It was 6116replaced 6117mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 6118bit 6119on 612032/64-bit platforms is required. 6121 6122Added the C const qualifier for appropriate string constants -- mostly 6123MODULE_NAME and printf format strings. Jan Beulich. 6124 6125Example Code and Data Size: These are the sizes for the OS-independent 6126acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6127debug version of the code includes the debug output trace mechanism and 6128has a 6129much larger code and data size. 6130 6131 Previous Release: 6132 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6133 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6134 Current Release: 6135 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6136 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6137 61382) iASL Compiler/Disassembler and Tools: 6139 6140Implemented ACPI table revision ID validation in the disassembler. Zero 6141is 6142always invalid. For DSDTs, the ID controls the interpreter integer width. 61431 6144means 32-bit and this is unusual. 2 or greater is 64-bit. 6145 6146---------------------------------------- 614721 March 2008. Summary of changes for version 20080321: 6148 61491) ACPI CA Core Subsystem: 6150 6151Implemented an additional change to the GPE support in order to suppress 6152spurious or stray GPEs. The AcpiEvDisableGpe function will now 6153permanently 6154disable incoming GPEs that are neither enabled nor disabled -- meaning 6155that 6156the GPE is unknown to the system. This should prevent future interrupt 6157floods 6158from that GPE. BZ 6217 (Zhang Rui) 6159 6160Fixed a problem where NULL package elements were not returned to the 6161AcpiEvaluateObject interface correctly. The element was simply ignored 6162instead of returning a NULL ACPI_OBJECT package element, potentially 6163causing 6164a buffer overflow and/or confusing the caller who expected a fixed number 6165of 6166elements. BZ 10132 (Lin Ming, Bob Moore) 6167 6168Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 6169Dword, 6170Qword), Field, BankField, and IndexField operators when invoked from 6171inside 6172an executing control method. In this case, these operators created 6173namespace 6174nodes that were incorrectly left marked as permanent nodes instead of 6175temporary nodes. This could cause a problem if there is race condition 6176between an exiting control method and a running namespace walk. (Reported 6177by 6178Linn Crosetto) 6179 6180Fixed a problem where the CreateField and CreateXXXField operators would 6181incorrectly allow duplicate names (the name of the field) with no 6182exception 6183generated. 6184 6185Implemented several changes for Notify handling. Added support for new 6186Notify 6187values (ACPI 2.0+) and improved the Notify debug output. Notify on 6188PowerResource objects is no longer allowed, as per the ACPI 6189specification. 6190(Bob Moore, Zhang Rui) 6191 6192All Reference Objects returned via the AcpiEvaluateObject interface are 6193now 6194marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 6195for 6196NULL objects - either NULL package elements or unresolved named 6197references. 6198 6199Fixed a problem where an extraneous debug message was produced for 6200package 6201objects (when debugging enabled). The message "Package List length larger 6202than NumElements count" is now produced in the correct case, and is now 6203an 6204error message rather than a debug message. Added a debug message for the 6205opposite case, where NumElements is larger than the Package List (the 6206package 6207will be padded out with NULL elements as per the ACPI spec.) 6208 6209Implemented several improvements for the output of the ASL "Debug" object 6210to 6211clarify and keep all data for a given object on one output line. 6212 6213Fixed two size calculation issues with the variable-length Start 6214Dependent 6215resource descriptor. 6216 6217Example Code and Data Size: These are the sizes for the OS-independent 6218acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6219debug version of the code includes the debug output trace mechanism and 6220has 6221a much larger code and data size. 6222 6223 Previous Release: 6224 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6225 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6226 Current Release: 6227 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6228 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6229 62302) iASL Compiler/Disassembler and Tools: 6231 6232Fixed a problem with the use of the Switch operator where execution of 6233the 6234containing method by multiple concurrent threads could cause an 6235AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 6236actual Switch opcode, it must be simulated with local named temporary 6237variables and if/else pairs. The solution chosen was to mark any method 6238that 6239uses Switch as Serialized, thus preventing multiple thread entries. BZ 6240469. 6241 6242---------------------------------------- 624313 February 2008. Summary of changes for version 20080213: 6244 62451) ACPI CA Core Subsystem: 6246 6247Implemented another MS compatibility design change for GPE/Notify 6248handling. 6249GPEs are now cleared/enabled asynchronously to allow all pending notifies 6250to 6251complete first. It is expected that the OSL will queue the enable request 6252behind all pending notify requests (may require changes to the local host 6253OSL 6254in AcpiOsExecute). Alexey Starikovskiy. 6255 6256Fixed a problem where buffer and package objects passed as arguments to a 6257control method via the external AcpiEvaluateObject interface could cause 6258an 6259AE_AML_INTERNAL exception depending on the order and type of operators 6260executed by the target control method. 6261 6262Fixed a problem where resource descriptor size optimization could cause a 6263problem when a _CRS resource template is passed to a _SRS method. The 6264_SRS 6265resource template must use the same descriptors (with the same size) as 6266returned from _CRS. This change affects the following resource 6267descriptors: 6268IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 62699487) 6270 6271Fixed a problem where a CopyObject to RegionField, BankField, and 6272IndexField 6273objects did not perform an implicit conversion as it should. These types 6274must 6275retain their initial type permanently as per the ACPI specification. 6276However, 6277a CopyObject to all other object types should not perform an implicit 6278conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 6279 6280Fixed a problem with the AcpiGetDevices interface where the mechanism to 6281match device CIDs did not examine the entire list of available CIDs, but 6282instead aborted on the first non-matching CID. Andrew Patterson. 6283 6284Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 6285was 6286inadvertently changed to return a 16-bit value instead of a 32-bit value, 6287truncating the upper dword of a 64-bit value. This macro is only used to 6288display debug output, so no incorrect calculations were made. Also, 6289reimplemented the macro so that a 64-bit shift is not performed by 6290inefficient compilers. 6291 6292Added missing va_end statements that should correspond with each va_start 6293statement. 6294 6295Example Code and Data Size: These are the sizes for the OS-independent 6296acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6297debug version of the code includes the debug output trace mechanism and 6298has 6299a much larger code and data size. 6300 6301 Previous Release: 6302 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6303 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6304 Current Release: 6305 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 6306 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 6307 63082) iASL Compiler/Disassembler and Tools: 6309 6310Implemented full disassembler support for the following new ACPI tables: 6311BERT, EINJ, and ERST. Implemented partial disassembler support for the 6312complicated HEST table. These tables support the Windows Hardware Error 6313Architecture (WHEA). 6314 6315---------------------------------------- 631623 January 2008. Summary of changes for version 20080123: 6317 63181) ACPI CA Core Subsystem: 6319 6320Added the 2008 copyright to all module headers and signons. This affects 6321virtually every file in the ACPICA core subsystem, the iASL compiler, and 6322the tools/utilities. 6323 6324Fixed a problem with the SizeOf operator when used with Package and 6325Buffer 6326objects. These objects have deferred execution for some arguments, and 6327the 6328execution is now completed before the SizeOf is executed. This problem 6329caused 6330unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 6331BZ 63329558 6333 6334Implemented an enhancement to the interpreter "slack mode". In the 6335absence 6336of 6337an explicit return or an implicitly returned object from the last 6338executed 6339opcode, a control method will now implicitly return an integer of value 0 6340for 6341Microsoft compatibility. (Lin Ming) BZ 392 6342 6343Fixed a problem with the Load operator where an exception was not 6344returned 6345in 6346the case where the table is already loaded. (Lin Ming) BZ 463 6347 6348Implemented support for the use of DDBHandles as an Indexed Reference, as 6349per 6350the ACPI spec. (Lin Ming) BZ 486 6351 6352Implemented support for UserTerm (Method invocation) for the Unload 6353operator 6354as per the ACPI spec. (Lin Ming) BZ 580 6355 6356Fixed a problem with the LoadTable operator where the OemId and 6357OemTableId 6358input strings could cause unexpected failures if they were shorter than 6359the 6360maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 6361 6362Implemented support for UserTerm (Method invocation) for the Unload 6363operator 6364as per the ACPI spec. (Lin Ming) BZ 580 6365 6366Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 6367HEST, 6368IBFT, UEFI, WDAT. Disassembler support is forthcoming. 6369 6370Example Code and Data Size: These are the sizes for the OS-independent 6371acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6372debug version of the code includes the debug output trace mechanism and 6373has 6374a much larger code and data size. 6375 6376 Previous Release: 6377 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6378 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6379 Current Release: 6380 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6381 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6382 63832) iASL Compiler/Disassembler and Tools: 6384 6385Implemented support in the disassembler for checksum validation on 6386incoming 6387binary DSDTs and SSDTs. If incorrect, a message is displayed within the 6388table 6389header dump at the start of the disassembly. 6390 6391Implemented additional debugging information in the namespace listing 6392file 6393created during compilation. In addition to the namespace hierarchy, the 6394full 6395pathname to each namespace object is displayed. 6396 6397Fixed a problem with the disassembler where invalid ACPI tables could 6398cause 6399faults or infinite loops. 6400 6401Fixed an unexpected parse error when using the optional "parameter types" 6402list in a control method declaration. (Lin Ming) BZ 397 6403 6404Fixed a problem where two External declarations with the same name did 6405not 6406cause an error (Lin Ming) BZ 509 6407 6408Implemented support for full TermArgs (adding Argx, Localx and method 6409invocation) for the ParameterData parameter to the LoadTable operator. 6410(Lin 6411Ming) BZ 583,587 6412 6413---------------------------------------- 641419 December 2007. Summary of changes for version 20071219: 6415 64161) ACPI CA Core Subsystem: 6417 6418Implemented full support for deferred execution for the TermArg string 6419arguments for DataTableRegion. This enables forward references and full 6420operand resolution for the three string arguments. Similar to 6421OperationRegion 6422deferred argument execution.) Lin Ming. BZ 430 6423 6424Implemented full argument resolution support for the BankValue argument 6425to 6426BankField. Previously, only constants were supported, now any TermArg may 6427be 6428used. Lin Ming BZ 387, 393 6429 6430Fixed a problem with AcpiGetDevices where the search of a branch of the 6431device tree could be terminated prematurely. In accordance with the ACPI 6432specification, the search down the current branch is terminated if a 6433device 6434is both not present and not functional (instead of just not present.) 6435Yakui 6436Zhao. 6437 6438Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 6439if 6440the underlying AML code changed the GPE enable registers. Now, any 6441unknown 6442incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 6443disabled 6444instead of simply ignored. Rui Zhang. 6445 6446Fixed a problem with Index Fields where the Index register was 6447incorrectly 6448limited to a maximum of 32 bits. Now any size may be used. 6449 6450Fixed a couple memory leaks associated with "implicit return" objects 6451when 6452the AML Interpreter slack mode is enabled. Lin Ming BZ 349 6453 6454Example Code and Data Size: These are the sizes for the OS-independent 6455acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6456debug version of the code includes the debug output trace mechanism and 6457has 6458a much larger code and data size. 6459 6460 Previous Release: 6461 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6462 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6463 Current Release: 6464 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6465 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6466 6467---------------------------------------- 646814 November 2007. Summary of changes for version 20071114: 6469 64701) ACPI CA Core Subsystem: 6471 6472Implemented event counters for each of the Fixed Events, the ACPI SCI 6473(interrupt) itself, and control methods executed. Named 6474AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 6475These 6476should be useful for debugging and statistics. 6477 6478Implemented a new external interface, AcpiGetStatistics, to retrieve the 6479contents of the various event counters. Returns the current values for 6480AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 6481AcpiMethodCount. The interface can be expanded in the future if new 6482counters 6483are added. Device drivers should use this interface rather than access 6484the 6485counters directly. 6486 6487Fixed a problem with the FromBCD and ToBCD operators. With some 6488compilers, 6489the ShortDivide function worked incorrectly, causing problems with the 6490BCD 6491functions with large input values. A truncation from 64-bit to 32-bit 6492inadvertently occurred. Internal BZ 435. Lin Ming 6493 6494Fixed a problem with Index references passed as method arguments. 6495References 6496passed as arguments to control methods were dereferenced immediately 6497(before 6498control was passed to the called method). The references are now 6499correctly 6500passed directly to the called method. BZ 5389. Lin Ming 6501 6502Fixed a problem with CopyObject used in conjunction with the Index 6503operator. 6504The reference was incorrectly dereferenced before the copy. The reference 6505is 6506now correctly copied. BZ 5391. Lin Ming 6507 6508Fixed a problem with Control Method references within Package objects. 6509These 6510references are now correctly generated. This completes the package 6511construction overhaul that began in version 20071019. 6512 6513Example Code and Data Size: These are the sizes for the OS-independent 6514acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6515debug version of the code includes the debug output trace mechanism and 6516has 6517a much larger code and data size. 6518 6519 Previous Release: 6520 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6521 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6522 Current Release: 6523 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6524 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6525 6526 65272) iASL Compiler/Disassembler and Tools: 6528 6529The AcpiExec utility now installs handlers for all of the predefined 6530Operation Region types. New types supported are: PCI_Config, CMOS, and 6531PCIBARTarget. 6532 6533Fixed a problem with the 64-bit version of AcpiExec where the extended 6534(64- 6535bit) address fields for the DSDT and FACS within the FADT were not being 6536used, causing truncation of the upper 32-bits of these addresses. Lin 6537Ming 6538and Bob Moore 6539 6540---------------------------------------- 654119 October 2007. Summary of changes for version 20071019: 6542 65431) ACPI CA Core Subsystem: 6544 6545Fixed a problem with the Alias operator when the target of the alias is a 6546named ASL operator that opens a new scope -- Scope, Device, 6547PowerResource, 6548Processor, and ThermalZone. In these cases, any children of the original 6549operator could not be accessed via the alias, potentially causing 6550unexpected 6551AE_NOT_FOUND exceptions. (BZ 9067) 6552 6553Fixed a problem with the Package operator where all named references were 6554created as object references and left otherwise unresolved. According to 6555the 6556ACPI specification, a Package can only contain Data Objects or references 6557to 6558control methods. The implication is that named references to Data Objects 6559(Integer, Buffer, String, Package, BufferField, Field) should be resolved 6560immediately upon package creation. This is the approach taken with this 6561change. References to all other named objects (Methods, Devices, Scopes, 6562etc.) are all now properly created as reference objects. (BZ 5328) 6563 6564Reverted a change to Notify handling that was introduced in version 656520070508. This version changed the Notify handling from asynchronous to 6566fully synchronous (Device driver Notify handling with respect to the 6567Notify 6568ASL operator). It was found that this change caused more problems than it 6569solved and was removed by most users. 6570 6571Fixed a problem with the Increment and Decrement operators where the type 6572of 6573the target object could be unexpectedly and incorrectly changed. (BZ 353) 6574Lin Ming. 6575 6576Fixed a problem with the Load and LoadTable operators where the table 6577location within the namespace was ignored. Instead, the table was always 6578loaded into the root or current scope. Lin Ming. 6579 6580Fixed a problem with the Load operator when loading a table from a buffer 6581object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 6582 6583Fixed a problem with the Debug object where a store of a DdbHandle 6584reference 6585object to the Debug object could cause a fault. 6586 6587Added a table checksum verification for the Load operator, in the case 6588where 6589the load is from a buffer. (BZ 578). 6590 6591Implemented additional parameter validation for the LoadTable operator. 6592The 6593length of the input strings SignatureString, OemIdString, and OemTableId 6594are 6595now checked for maximum lengths. (BZ 582) Lin Ming. 6596 6597Example Code and Data Size: These are the sizes for the OS-independent 6598acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6599debug version of the code includes the debug output trace mechanism and 6600has 6601a much larger code and data size. 6602 6603 Previous Release: 6604 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6605 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6606 Current Release: 6607 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6608 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6609 6610 66112) iASL Compiler/Disassembler: 6612 6613Fixed a problem where if a single file was specified and the file did not 6614exist, no error message was emitted. (Introduced with wildcard support in 6615version 20070917.) 6616 6617---------------------------------------- 661819 September 2007. Summary of changes for version 20070919: 6619 66201) ACPI CA Core Subsystem: 6621 6622Designed and implemented new external interfaces to install and remove 6623handlers for ACPI table-related events. Current events that are defined 6624are 6625LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 6626they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 6627AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 6628 6629Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 6630(acpi_serialized option on Linux) could cause some systems to hang during 6631initialization. (Bob Moore) BZ 8171 6632 6633Fixed a problem where objects of certain types (Device, ThermalZone, 6634Processor, PowerResource) can be not found if they are declared and 6635referenced from within the same control method (Lin Ming) BZ 341 6636 6637Example Code and Data Size: These are the sizes for the OS-independent 6638acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6639debug version of the code includes the debug output trace mechanism and 6640has 6641a much larger code and data size. 6642 6643 Previous Release: 6644 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 6645 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 6646 Current Release: 6647 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6648 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6649 6650 66512) iASL Compiler/Disassembler: 6652 6653Implemented support to allow multiple files to be compiled/disassembled 6654in 6655a 6656single invocation. This includes command line wildcard support for both 6657the 6658Windows and Unix versions of the compiler. This feature simplifies the 6659disassembly and compilation of multiple ACPI tables in a single 6660directory. 6661 6662---------------------------------------- 666308 May 2007. Summary of changes for version 20070508: 6664 66651) ACPI CA Core Subsystem: 6666 6667Implemented a Microsoft compatibility design change for the handling of 6668the 6669Notify AML operator. Previously, notify handlers were dispatched and 6670executed completely asynchronously in a deferred thread. The new design 6671still executes the notify handlers in a different thread, but the 6672original 6673thread that executed the Notify() now waits at a synchronization point 6674for 6675the notify handler to complete. Some machines depend on a synchronous 6676Notify 6677operator in order to operate correctly. 6678 6679Implemented support to allow Package objects to be passed as method 6680arguments to the external AcpiEvaluateObject interface. Previously, this 6681would return the AE_NOT_IMPLEMENTED exception. This feature had not been 6682implemented since there were no reserved control methods that required it 6683until recently. 6684 6685Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 6686that 6687contained invalid non-zero values in reserved fields could cause later 6688failures because these fields have meaning in later revisions of the 6689FADT. 6690For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 6691fields 6692are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 6693 6694Fixed a problem where the Global Lock handle was not properly updated if 6695a 6696thread that acquired the Global Lock via executing AML code then 6697attempted 6698to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 6699Joe 6700Liu. 6701 6702Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 6703could be corrupted if the interrupt being removed was at the head of the 6704list. Reported by Linn Crosetto. 6705 6706Example Code and Data Size: These are the sizes for the OS-independent 6707acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6708debug version of the code includes the debug output trace mechanism and 6709has 6710a much larger code and data size. 6711 6712 Previous Release: 6713 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6714 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 6715 Current Release: 6716 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 6717 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 6718 6719---------------------------------------- 672020 March 2007. Summary of changes for version 20070320: 6721 67221) ACPI CA Core Subsystem: 6723 6724Implemented a change to the order of interpretation and evaluation of AML 6725operand objects within the AML interpreter. The interpreter now evaluates 6726operands in the order that they appear in the AML stream (and the 6727corresponding ASL code), instead of in the reverse order (after the 6728entire 6729operand list has been parsed). The previous behavior caused several 6730subtle 6731incompatibilities with the Microsoft AML interpreter as well as being 6732somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 6733 6734Implemented a change to the ACPI Global Lock support. All interfaces to 6735the 6736global lock now allow the same thread to acquire the lock multiple times. 6737This affects the AcpiAcquireGlobalLock external interface to the global 6738lock 6739as well as the internal use of the global lock to support AML fields -- a 6740control method that is holding the global lock can now simultaneously 6741access 6742AML fields that require global lock protection. Previously, in both 6743cases, 6744this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 6745to 6746AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 6747Controller. There is no change to the behavior of the AML Acquire 6748operator, 6749as this can already be used to acquire a mutex multiple times by the same 6750thread. BZ 8066. With assistance from Alexey Starikovskiy. 6751 6752Fixed a problem where invalid objects could be referenced in the AML 6753Interpreter after error conditions. During operand evaluation, ensure 6754that 6755the internal "Return Object" field is cleared on error and only valid 6756pointers are stored there. Caused occasional access to deleted objects 6757that 6758resulted in "large reference count" warning messages. Valery Podrezov. 6759 6760Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 6761on 6762deeply nested control method invocations. BZ 7873, local BZ 487. Valery 6763Podrezov. 6764 6765Fixed an internal problem with the handling of result objects on the 6766interpreter result stack. BZ 7872. Valery Podrezov. 6767 6768Removed obsolete code that handled the case where AML_NAME_OP is the 6769target 6770of a reference (Reference.Opcode). This code was no longer necessary. BZ 67717874. Valery Podrezov. 6772 6773Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 6774was 6775a 6776remnant from the previously discontinued 16-bit support. 6777 6778Example Code and Data Size: These are the sizes for the OS-independent 6779acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6780debug version of the code includes the debug output trace mechanism and 6781has 6782a much larger code and data size. 6783 6784 Previous Release: 6785 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6786 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6787 Current Release: 6788 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6789 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 6790 6791---------------------------------------- 679226 January 2007. Summary of changes for version 20070126: 6793 67941) ACPI CA Core Subsystem: 6795 6796Added the 2007 copyright to all module headers and signons. This affects 6797virtually every file in the ACPICA core subsystem, the iASL compiler, and 6798the utilities. 6799 6800Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 6801during a table load. A bad pointer was passed in the case where the DSDT 6802is 6803overridden, causing a fault in this case. 6804 6805Example Code and Data Size: These are the sizes for the OS-independent 6806acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6807debug version of the code includes the debug output trace mechanism and 6808has 6809a much larger code and data size. 6810 6811 Previous Release: 6812 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6813 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6814 Current Release: 6815 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6816 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6817 6818---------------------------------------- 681915 December 2006. Summary of changes for version 20061215: 6820 68211) ACPI CA Core Subsystem: 6822 6823Support for 16-bit ACPICA has been completely removed since it is no 6824longer 6825necessary and it clutters the code. All 16-bit macros, types, and 6826conditional compiles have been removed, cleaning up and simplifying the 6827code 6828across the entire subsystem. DOS support is no longer needed since the 6829bootable Linux firmware kit is now available. 6830 6831The handler for the Global Lock is now removed during AcpiTerminate to 6832enable a clean subsystem restart, via the implementation of the 6833AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 6834HP) 6835 6836Implemented enhancements to the multithreading support within the 6837debugger 6838to enable improved multithreading debugging and evaluation of the 6839subsystem. 6840(Valery Podrezov) 6841 6842Debugger: Enhanced the Statistics/Memory command to emit the total 6843(maximum) 6844memory used during the execution, as well as the maximum memory consumed 6845by 6846each of the various object types. (Valery Podrezov) 6847 6848Example Code and Data Size: These are the sizes for the OS-independent 6849acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6850debug version of the code includes the debug output trace mechanism and 6851has 6852a much larger code and data size. 6853 6854 Previous Release: 6855 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 6856 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 6857 Current Release: 6858 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6859 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6860 6861 68622) iASL Compiler/Disassembler and Tools: 6863 6864AcpiExec: Implemented a new option (-m) to display full memory use 6865statistics upon subsystem/program termination. (Valery Podrezov) 6866 6867---------------------------------------- 686809 November 2006. Summary of changes for version 20061109: 6869 68701) ACPI CA Core Subsystem: 6871 6872Optimized the Load ASL operator in the case where the source operand is 6873an 6874operation region. Simply map the operation region memory, instead of 6875performing a bytewise read. (Region must be of type SystemMemory, see 6876below.) 6877 6878Fixed the Load ASL operator for the case where the source operand is a 6879region field. A buffer object is also allowed as the source operand. BZ 6880480 6881 6882Fixed a problem where the Load ASL operator allowed the source operand to 6883be 6884an operation region of any type. It is now restricted to regions of type 6885SystemMemory, as per the ACPI specification. BZ 481 6886 6887Additional cleanup and optimizations for the new Table Manager code. 6888 6889AcpiEnable will now fail if all of the required ACPI tables are not 6890loaded 6891(FADT, FACS, DSDT). BZ 477 6892 6893Added #pragma pack(8/4) to acobject.h to ensure that the structures in 6894this 6895header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 6896manually optimized to be aligned and will not work if it is byte-packed. 6897 6898Example Code and Data Size: These are the sizes for the OS-independent 6899acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6900debug version of the code includes the debug output trace mechanism and 6901has 6902a much larger code and data size. 6903 6904 Previous Release: 6905 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 6906 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 6907 Current Release: 6908 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 6909 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 6910 6911 69122) iASL Compiler/Disassembler and Tools: 6913 6914Fixed a problem where the presence of the _OSI predefined control method 6915within complex expressions could cause an internal compiler error. 6916 6917AcpiExec: Implemented full region support for multiple address spaces. 6918SpaceId is now part of the REGION object. BZ 429 6919 6920---------------------------------------- 692111 October 2006. Summary of changes for version 20061011: 6922 69231) ACPI CA Core Subsystem: 6924 6925Completed an AML interpreter performance enhancement for control method 6926execution. Previously a 2-pass parse/execution, control methods are now 6927completely parsed and executed in a single pass. This improves overall 6928interpreter performance by ~25%, reduces code size, and reduces CPU stack 6929use. (Valery Podrezov + interpreter changes in version 20051202 that 6930eliminated namespace loading during the pass one parse.) 6931 6932Implemented _CID support for PCI Root Bridge detection. If the _HID does 6933not 6934match the predefined PCI Root Bridge IDs, the _CID list (if present) is 6935now 6936obtained and also checked for an ID match. 6937 6938Implemented additional support for the PCI _ADR execution: upsearch until 6939a 6940device scope is found before executing _ADR. This allows PCI_Config 6941operation regions to be declared locally within control methods 6942underneath 6943PCI device objects. 6944 6945Fixed a problem with a possible race condition between threads executing 6946AcpiWalkNamespace and the AML interpreter. This condition was removed by 6947modifying AcpiWalkNamespace to (by default) ignore all temporary 6948namespace 6949entries created during any concurrent control method execution. An 6950additional namespace race condition is known to exist between 6951AcpiWalkNamespace and the Load/Unload ASL operators and is still under 6952investigation. 6953 6954Restructured the AML ParseLoop function, breaking it into several 6955subfunctions in order to reduce CPU stack use and improve 6956maintainability. 6957(Mikhail Kouzmich) 6958 6959AcpiGetHandle: Fix for parameter validation to detect invalid 6960combinations 6961of prefix handle and pathname. BZ 478 6962 6963Example Code and Data Size: These are the sizes for the OS-independent 6964acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6965debug version of the code includes the debug output trace mechanism and 6966has 6967a much larger code and data size. 6968 6969 Previous Release: 6970 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 6971 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 6972 Current Release: 6973 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 6974 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 6975 69762) iASL Compiler/Disassembler and Tools: 6977 6978Ported the -g option (get local ACPI tables) to the new ACPICA Table 6979Manager 6980to restore original behavior. 6981 6982---------------------------------------- 698327 September 2006. Summary of changes for version 20060927: 6984 69851) ACPI CA Core Subsystem: 6986 6987Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 6988These functions now use a spinlock for mutual exclusion and the interrupt 6989level indication flag is not needed. 6990 6991Fixed a problem with the Global Lock where the lock could appear to be 6992obtained before it is actually obtained. The global lock semaphore was 6993inadvertently created with one unit instead of zero units. (BZ 464) 6994Fiodor 6995Suietov. 6996 6997Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 6998during 6999a read from a buffer or region field. (BZ 458) Fiodor Suietov. 7000 7001Example Code and Data Size: These are the sizes for the OS-independent 7002acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7003debug version of the code includes the debug output trace mechanism and 7004has 7005a much larger code and data size. 7006 7007 Previous Release: 7008 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7009 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7010 Current Release: 7011 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7012 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7013 7014 70152) iASL Compiler/Disassembler and Tools: 7016 7017Fixed a compilation problem with the pre-defined Resource Descriptor 7018field 7019names where an "object does not exist" error could be incorrectly 7020generated 7021if the parent ResourceTemplate pathname places the template within a 7022different namespace scope than the current scope. (BZ 7212) 7023 7024Fixed a problem where the compiler could hang after syntax errors 7025detected 7026in an ElseIf construct. (BZ 453) 7027 7028Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 7029operator. An incorrect output filename was produced when this parameter 7030was 7031a null string (""). Now, the original input filename is used as the AML 7032output filename, with an ".aml" extension. 7033 7034Implemented a generic batch command mode for the AcpiExec utility 7035(execute 7036any AML debugger command) (Valery Podrezov). 7037 7038---------------------------------------- 703912 September 2006. Summary of changes for version 20060912: 7040 70411) ACPI CA Core Subsystem: 7042 7043Enhanced the implementation of the "serialized mode" of the interpreter 7044(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 7045specified, instead of creating a serialization semaphore per control 7046method, 7047the interpreter lock is simply no longer released before a blocking 7048operation during control method execution. This effectively makes the AML 7049Interpreter single-threaded. The overhead of a semaphore per-method is 7050eliminated. 7051 7052Fixed a regression where an error was no longer emitted if a control 7053method 7054attempts to create 2 objects of the same name. This once again returns 7055AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 7056that 7057will dynamically serialize the control method to possible prevent future 7058errors. (BZ 440) 7059 7060Integrated a fix for a problem with PCI Express HID detection in the PCI 7061Config Space setup procedure. (BZ 7145) 7062 7063Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 7064AcpiHwInitialize function - the FADT registers are now validated when the 7065table is loaded. 7066 7067Added two new warnings during FADT verification - 1) if the FADT is 7068larger 7069than the largest known FADT version, and 2) if there is a mismatch 7070between 7071a 707232-bit block address and the 64-bit X counterpart (when both are non- 7073zero.) 7074 7075Example Code and Data Size: These are the sizes for the OS-independent 7076acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7077debug version of the code includes the debug output trace mechanism and 7078has 7079a much larger code and data size. 7080 7081 Previous Release: 7082 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7083 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7084 Current Release: 7085 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7086 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7087 7088 70892) iASL Compiler/Disassembler and Tools: 7090 7091Fixed a problem with the implementation of the Switch() operator where 7092the 7093temporary variable was declared too close to the actual Switch, instead 7094of 7095at method level. This could cause a problem if the Switch() operator is 7096within a while loop, causing an error on the second iteration. (BZ 460) 7097 7098Disassembler - fix for error emitted for unknown type for target of scope 7099operator. Now, ignore it and continue. 7100 7101Disassembly of an FADT now verifies the input FADT and reports any errors 7102found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 7103 7104Disassembly of raw data buffers with byte initialization data now 7105prefixes 7106each output line with the current buffer offset. 7107 7108Disassembly of ASF! table now includes all variable-length data fields at 7109the end of some of the subtables. 7110 7111The disassembler now emits a comment if a buffer appears to be a 7112ResourceTemplate, but cannot be disassembled as such because the EndTag 7113does 7114not appear at the very end of the buffer. 7115 7116AcpiExec - Added the "-t" command line option to enable the serialized 7117mode 7118of the AML interpreter. 7119 7120---------------------------------------- 712131 August 2006. Summary of changes for version 20060831: 7122 71231) ACPI CA Core Subsystem: 7124 7125Miscellaneous fixes for the Table Manager: 7126- Correctly initialize internal common FADT for all 64-bit "X" fields 7127- Fixed a couple table mapping issues during table load 7128- Fixed a couple alignment issues for IA64 7129- Initialize input array to zero in AcpiInitializeTables 7130- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 7131AcpiGetTableByIndex 7132 7133Change for GPE support: when a "wake" GPE is received, all wake GPEs are 7134now 7135immediately disabled to prevent the waking GPE from firing again and to 7136prevent other wake GPEs from interrupting the wake process. 7137 7138Added the AcpiGpeCount global that tracks the number of processed GPEs, 7139to 7140be used for debugging systems with a large number of ACPI interrupts. 7141 7142Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 7143both the ACPICA headers and the disassembler. 7144 7145Example Code and Data Size: These are the sizes for the OS-independent 7146acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7147debug version of the code includes the debug output trace mechanism and 7148has 7149a much larger code and data size. 7150 7151 Previous Release: 7152 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7153 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7154 Current Release: 7155 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7156 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7157 7158 71592) iASL Compiler/Disassembler and Tools: 7160 7161Disassembler support for the DMAR ACPI table. 7162 7163---------------------------------------- 716423 August 2006. Summary of changes for version 20060823: 7165 71661) ACPI CA Core Subsystem: 7167 7168The Table Manager component has been completely redesigned and 7169reimplemented. The new design is much simpler, and reduces the overall 7170code 7171and data size of the kernel-resident ACPICA by approximately 5%. Also, it 7172is 7173now possible to obtain the ACPI tables very early during kernel 7174initialization, even before dynamic memory management is initialized. 7175(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 7176 7177Obsolete ACPICA interfaces: 7178 7179- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 7180init 7181time). 7182- AcpiLoadTable: Not needed. 7183- AcpiUnloadTable: Not needed. 7184 7185New ACPICA interfaces: 7186 7187- AcpiInitializeTables: Must be called before the table manager can be 7188used. 7189- AcpiReallocateRootTable: Used to transfer the root table to dynamically 7190allocated memory after it becomes available. 7191- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 7192tables 7193in the RSDT/XSDT. 7194 7195Other ACPICA changes: 7196 7197- AcpiGetTableHeader returns the actual mapped table header, not a copy. 7198Use 7199AcpiOsUnmapMemory to free this mapping. 7200- AcpiGetTable returns the actual mapped table. The mapping is managed 7201internally and must not be deleted by the caller. Use of this interface 7202causes no additional dynamic memory allocation. 7203- AcpiFindRootPointer: Support for physical addressing has been 7204eliminated, 7205it appeared to be unused. 7206- The interface to AcpiOsMapMemory has changed to be consistent with the 7207other allocation interfaces. 7208- The interface to AcpiOsGetRootPointer has changed to eliminate 7209unnecessary 7210parameters. 7211- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 721264- 7213bit platforms. Was previously 64 bits on all platforms. 7214- The interface to the ACPI Global Lock acquire/release macros have 7215changed 7216slightly since ACPICA no longer keeps a local copy of the FACS with a 7217constructed pointer to the actual global lock. 7218 7219Porting to the new table manager: 7220 7221- AcpiInitializeTables: Must be called once, and can be called anytime 7222during the OS initialization process. It allows the host to specify an 7223area 7224of memory to be used to store the internal version of the RSDT/XSDT (root 7225table). This allows the host to access ACPI tables before memory 7226management 7227is initialized and running. 7228- AcpiReallocateRootTable: Can be called after memory management is 7229running 7230to copy the root table to a dynamically allocated array, freeing up the 7231scratch memory specified in the call to AcpiInitializeTables. 7232- AcpiSubsystemInitialize: This existing interface is independent of the 7233Table Manager, and does not have to be called before the Table Manager 7234can 7235be used, it only must be called before the rest of ACPICA can be used. 7236- ACPI Tables: Some changes have been made to the names and structure of 7237the 7238actbl.h and actbl1.h header files and may require changes to existing 7239code. 7240For example, bitfields have been completely removed because of their lack 7241of 7242portability across C compilers. 7243- Update interfaces to the Global Lock acquire/release macros if local 7244versions are used. (see acwin.h) 7245 7246Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 7247 7248New files: tbfind.c 7249 7250Example Code and Data Size: These are the sizes for the OS-independent 7251acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7252debug version of the code includes the debug output trace mechanism and 7253has 7254a much larger code and data size. 7255 7256 Previous Release: 7257 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7258 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7259 Current Release: 7260 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7261 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7262 7263 72642) iASL Compiler/Disassembler and Tools: 7265 7266No changes for this release. 7267 7268---------------------------------------- 726921 July 2006. Summary of changes for version 20060721: 7270 72711) ACPI CA Core Subsystem: 7272 7273The full source code for the ASL test suite used to validate the iASL 7274compiler and the ACPICA core subsystem is being released with the ACPICA 7275source for the first time. The source is contained in a separate package 7276and 7277consists of over 1100 files that exercise all ASL/AML operators. The 7278package 7279should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 7280Fiodor 7281Suietov) 7282 7283Completed a new design and implementation for support of the ACPI Global 7284Lock. On the OS side, the global lock is now treated as a standard AML 7285mutex. Previously, multiple OS threads could "acquire" the global lock 7286simultaneously. However, this could cause the BIOS to be starved out of 7287the 7288lock - especially in cases such as the Embedded Controller driver where 7289there is a tight coupling between the OS and the BIOS. 7290 7291Implemented an optimization for the ACPI Global Lock interrupt mechanism. 7292The Global Lock interrupt handler no longer queues the execution of a 7293separate thread to signal the global lock semaphore. Instead, the 7294semaphore 7295is signaled directly from the interrupt handler. 7296 7297Implemented support within the AML interpreter for package objects that 7298contain a larger AML length (package list length) than the package 7299element 7300count. In this case, the length of the package is truncated to match the 7301package element count. Some BIOS code apparently modifies the package 7302length 7303on the fly, and this change supports this behavior. Provides 7304compatibility 7305with the MS AML interpreter. (With assistance from Fiodor Suietov) 7306 7307Implemented a temporary fix for the BankValue parameter of a Bank Field 7308to 7309support all constant values, now including the Zero and One opcodes. 7310Evaluation of this parameter must eventually be converted to a full 7311TermArg 7312evaluation. A not-implemented error is now returned (temporarily) for 7313non- 7314constant values for this parameter. 7315 7316Fixed problem reports (Fiodor Suietov) integrated: 7317- Fix for premature object deletion after CopyObject on Operation Region 7318(BZ 7319350) 7320 7321Example Code and Data Size: These are the sizes for the OS-independent 7322acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7323debug version of the code includes the debug output trace mechanism and 7324has 7325a much larger code and data size. 7326 7327 Previous Release: 7328 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 7329 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 7330 Current Release: 7331 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7332 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7333 7334 73352) iASL Compiler/Disassembler and Tools: 7336 7337No changes for this release. 7338 7339---------------------------------------- 734007 July 2006. Summary of changes for version 20060707: 7341 73421) ACPI CA Core Subsystem: 7343 7344Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 7345that do not allow the initialization of address pointers within packed 7346structures - even though the hardware itself may support misaligned 7347transfers. Some of the debug data structures are packed by default to 7348minimize size. 7349 7350Added an error message for the case where AcpiOsGetThreadId() returns 7351zero. 7352A non-zero value is required by the core ACPICA code to ensure the proper 7353operation of AML mutexes and recursive control methods. 7354 7355The DSDT is now the only ACPI table that determines whether the AML 7356interpreter is in 32-bit or 64-bit mode. Not really a functional change, 7357but 7358the hooks for per-table 32/64 switching have been removed from the code. 7359A 7360clarification to the ACPI specification is forthcoming in ACPI 3.0B. 7361 7362Fixed a possible leak of an OwnerID in the error path of 7363AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 7364deletion to a single place in AcpiTbUninstallTable to correct possible 7365leaks 7366when using the AcpiTbDeleteTablesByType interface (with assistance from 7367Lance Ortiz.) 7368 7369Fixed a problem with Serialized control methods where the semaphore 7370associated with the method could be over-signaled after multiple method 7371invocations. 7372 7373Fixed two issues with the locking of the internal namespace data 7374structure. 7375Both the Unload() operator and AcpiUnloadTable interface now lock the 7376namespace during the namespace deletion associated with the table unload 7377(with assistance from Linn Crosetto.) 7378 7379Fixed problem reports (Valery Podrezov) integrated: 7380- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 7381 7382Fixed problem reports (Fiodor Suietov) integrated: 7383- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 7384- On Address Space handler deletion, needless deactivation call (BZ 374) 7385- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 7386375) 7387- Possible memory leak, Notify sub-objects of Processor, Power, 7388ThermalZone 7389(BZ 376) 7390- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 7391- Minimum Length of RSDT should be validated (BZ 379) 7392- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 7393Handler (BZ (380) 7394- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 7395loaded 7396(BZ 381) 7397 7398Example Code and Data Size: These are the sizes for the OS-independent 7399acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7400debug version of the code includes the debug output trace mechanism and 7401has 7402a much larger code and data size. 7403 7404 Previous Release: 7405 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7406 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7407 Current Release: 7408 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7409 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7410 7411 74122) iASL Compiler/Disassembler and Tools: 7413 7414Fixed problem reports: 7415Compiler segfault when ASL contains a long (>1024) String declaration (BZ 7416436) 7417 7418---------------------------------------- 741923 June 2006. Summary of changes for version 20060623: 7420 74211) ACPI CA Core Subsystem: 7422 7423Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 7424allows the type to be customized to the host OS for improved efficiency 7425(since a spinlock is usually a very small object.) 7426 7427Implemented support for "ignored" bits in the ACPI registers. According 7428to 7429the ACPI specification, these bits should be preserved when writing the 7430registers via a read/modify/write cycle. There are 3 bits preserved in 7431this 7432manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 7433 7434Implemented the initial deployment of new OSL mutex interfaces. Since 7435some 7436host operating systems have separate mutex and semaphore objects, this 7437feature was requested. The base code now uses mutexes (and the new mutex 7438interfaces) wherever a binary semaphore was used previously. However, for 7439the current release, the mutex interfaces are defined as macros to map 7440them 7441to the existing semaphore interfaces. Therefore, no OSL changes are 7442required 7443at this time. (See acpiosxf.h) 7444 7445Fixed several problems with the support for the control method SyncLevel 7446parameter. The SyncLevel now works according to the ACPI specification 7447and 7448in concert with the Mutex SyncLevel parameter, since the current 7449SyncLevel 7450is a property of the executing thread. Mutual exclusion for control 7451methods 7452is now implemented with a mutex instead of a semaphore. 7453 7454Fixed three instances of the use of the C shift operator in the bitfield 7455support code (exfldio.c) to avoid the use of a shift value larger than 7456the 7457target data width. The behavior of C compilers is undefined in this case 7458and 7459can cause unpredictable results, and therefore the case must be detected 7460and 7461avoided. (Fiodor Suietov) 7462 7463Added an info message whenever an SSDT or OEM table is loaded dynamically 7464via the Load() or LoadTable() ASL operators. This should improve 7465debugging 7466capability since it will show exactly what tables have been loaded 7467(beyond 7468the tables present in the RSDT/XSDT.) 7469 7470Example Code and Data Size: These are the sizes for the OS-independent 7471acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7472debug version of the code includes the debug output trace mechanism and 7473has 7474a much larger code and data size. 7475 7476 Previous Release: 7477 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7478 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7479 Current Release: 7480 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7481 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7482 7483 74842) iASL Compiler/Disassembler and Tools: 7485 7486No changes for this release. 7487 7488---------------------------------------- 748908 June 2006. Summary of changes for version 20060608: 7490 74911) ACPI CA Core Subsystem: 7492 7493Converted the locking mutex used for the ACPI hardware to a spinlock. 7494This 7495change should eliminate all problems caused by attempting to acquire a 7496semaphore at interrupt level, and it means that all ACPICA external 7497interfaces that directly access the ACPI hardware can be safely called 7498from 7499interrupt level. OSL code that implements the semaphore interfaces should 7500be 7501able to eliminate any workarounds for being called at interrupt level. 7502 7503Fixed a regression introduced in 20060526 where the ACPI device 7504initialization could be prematurely aborted with an AE_NOT_FOUND if a 7505device 7506did not have an optional _INI method. 7507 7508Fixed an IndexField issue where a write to the Data Register should be 7509limited in size to the AccessSize (width) of the IndexField itself. (BZ 7510433, 7511Fiodor Suietov) 7512 7513Fixed problem reports (Valery Podrezov) integrated: 7514- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 7515 7516Fixed problem reports (Fiodor Suietov) integrated: 7517- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 7518 7519Removed four global mutexes that were obsolete and were no longer being 7520used. 7521 7522Example Code and Data Size: These are the sizes for the OS-independent 7523acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7524debug version of the code includes the debug output trace mechanism and 7525has 7526a much larger code and data size. 7527 7528 Previous Release: 7529 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7530 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7531 Current Release: 7532 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7533 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7534 7535 75362) iASL Compiler/Disassembler and Tools: 7537 7538Fixed a fault when using -g option (get tables from registry) on Windows 7539machines. 7540 7541Fixed problem reports integrated: 7542- Generate error if CreateField NumBits parameter is zero. (BZ 405) 7543- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 7544Suietov) 7545- Global table revision override (-r) is ignored (BZ 413) 7546 7547---------------------------------------- 754826 May 2006. Summary of changes for version 20060526: 7549 75501) ACPI CA Core Subsystem: 7551 7552Restructured, flattened, and simplified the internal interfaces for 7553namespace object evaluation - resulting in smaller code, less CPU stack 7554use, 7555and fewer interfaces. (With assistance from Mikhail Kouzmich) 7556 7557Fixed a problem with the CopyObject operator where the first parameter 7558was 7559not typed correctly for the parser, interpreter, compiler, and 7560disassembler. 7561Caused various errors and unexpected behavior. 7562 7563Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 7564produced incorrect results with some C compilers. Since the behavior of C 7565compilers when the shift value is larger than the datatype width is 7566apparently not well defined, the interpreter now detects this condition 7567and 7568simply returns zero as expected in all such cases. (BZ 395) 7569 7570Fixed problem reports (Valery Podrezov) integrated: 7571- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 7572- Allow interpreter to handle nested method declarations (BZ 5361) 7573 7574Fixed problem reports (Fiodor Suietov) integrated: 7575- AcpiTerminate doesn't free debug memory allocation list objects (BZ 7576355) 7577- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 7578356) 7579- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 7580- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 7581- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 7582- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 7583- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 7584- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 7585- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 7586365) 7587- Status of the Global Initialization Handler call not used (BZ 366) 7588- Incorrect object parameter to Global Initialization Handler (BZ 367) 7589 7590Example Code and Data Size: These are the sizes for the OS-independent 7591acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7592debug version of the code includes the debug output trace mechanism and 7593has 7594a much larger code and data size. 7595 7596 Previous Release: 7597 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7598 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7599 Current Release: 7600 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7601 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7602 7603 76042) iASL Compiler/Disassembler and Tools: 7605 7606Modified the parser to allow the names IO, DMA, and IRQ to be used as 7607namespace identifiers with no collision with existing resource descriptor 7608macro names. This provides compatibility with other ASL compilers and is 7609most useful for disassembly/recompilation of existing tables without 7610parse 7611errors. (With assistance from Thomas Renninger) 7612 7613Disassembler: fixed an incorrect disassembly problem with the 7614DataTableRegion and CopyObject operators. Fixed a possible fault during 7615disassembly of some Alias operators. 7616 7617---------------------------------------- 761812 May 2006. Summary of changes for version 20060512: 7619 76201) ACPI CA Core Subsystem: 7621 7622Replaced the AcpiOsQueueForExecution interface with a new interface named 7623AcpiOsExecute. The major difference is that the new interface does not 7624have 7625a Priority parameter, this appeared to be useless and has been replaced 7626by 7627a 7628Type parameter. The Type tells the host what type of execution is being 7629requested, such as global lock handler, notify handler, GPE handler, etc. 7630This allows the host to queue and execute the request as appropriate for 7631the 7632request type, possibly using different work queues and different 7633priorities 7634for the various request types. This enables fixes for multithreading 7635deadlock problems such as BZ #5534, and will require changes to all 7636existing 7637OS interface layers. (Alexey Starikovskiy and Bob Moore) 7638 7639Fixed a possible memory leak associated with the support for the so- 7640called 7641"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 7642Suietov) 7643 7644Fixed a problem with the Load() operator where a table load from an 7645operation region could overwrite an internal table buffer by up to 7 7646bytes 7647and cause alignment faults on IPF systems. (With assistance from Luming 7648Yu) 7649 7650Example Code and Data Size: These are the sizes for the OS-independent 7651acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7652debug version of the code includes the debug output trace mechanism and 7653has 7654a much larger code and data size. 7655 7656 Previous Release: 7657 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 7658 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 7659 Current Release: 7660 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7661 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7662 7663 7664 76652) iASL Compiler/Disassembler and Tools: 7666 7667Disassembler: Implemented support to cross reference the internal 7668namespace 7669and automatically generate ASL External() statements for symbols not 7670defined 7671within the current table being disassembled. This will simplify the 7672disassembly and recompilation of interdependent tables such as SSDTs 7673since 7674these statements will no longer have to be added manually. 7675 7676Disassembler: Implemented experimental support to automatically detect 7677invocations of external control methods and generate appropriate 7678External() 7679statements. This is problematic because the AML cannot be correctly 7680parsed 7681until the number of arguments for each control method is known. 7682Currently, 7683standalone method invocations and invocations as the source operand of a 7684Store() statement are supported. 7685 7686Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 7687LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 7688LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 7689more readable and likely closer to the original ASL source. 7690 7691---------------------------------------- 769221 April 2006. Summary of changes for version 20060421: 7693 76941) ACPI CA Core Subsystem: 7695 7696Removed a device initialization optimization introduced in 20051216 where 7697the _STA method was not run unless an _INI was also present for the same 7698device. This optimization could cause problems because it could allow 7699_INI 7700methods to be run within a not-present device subtree. (If a not-present 7701device had no _INI, _STA would not be run, the not-present status would 7702not 7703be discovered, and the children of the device would be incorrectly 7704traversed.) 7705 7706Implemented a new _STA optimization where namespace subtrees that do not 7707contain _INI are identified and ignored during device initialization. 7708Selectively running _STA can significantly improve boot time on large 7709machines (with assistance from Len Brown.) 7710 7711Implemented support for the device initialization case where the returned 7712_STA flags indicate a device not-present but functioning. In this case, 7713_INI 7714is not run, but the device children are examined for presence, as per the 7715ACPI specification. 7716 7717Implemented an additional change to the IndexField support in order to 7718conform to MS behavior. The value written to the Index Register is not 7719simply a byte offset, it is a byte offset in units of the access width of 7720the parent Index Field. (Fiodor Suietov) 7721 7722Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 7723interface is called during the creation of all AML operation regions, and 7724allows the host OS to exert control over what addresses it will allow the 7725AML code to access. Operation Regions whose addresses are disallowed will 7726cause a runtime exception when they are actually accessed (will not 7727affect 7728or abort table loading.) See oswinxf or osunixxf for an example 7729implementation. 7730 7731Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 7732interface allows the host OS to match the various "optional" 7733interface/behavior strings for the _OSI predefined control method as 7734appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 7735for an example implementation. 7736 7737Restructured and corrected various problems in the exception handling 7738code 7739paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 7740(with assistance from Takayoshi Kochi.) 7741 7742Modified the Linux source converter to ignore quoted string literals 7743while 7744converting identifiers from mixed to lower case. This will correct 7745problems 7746with the disassembler and other areas where such strings must not be 7747modified. 7748 7749The ACPI_FUNCTION_* macros no longer require quotes around the function 7750name. This allows the Linux source converter to convert the names, now 7751that 7752the converter ignores quoted strings. 7753 7754Example Code and Data Size: These are the sizes for the OS-independent 7755acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7756debug version of the code includes the debug output trace mechanism and 7757has 7758a much larger code and data size. 7759 7760 Previous Release: 7761 7762 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 7763 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 7764 Current Release: 7765 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 7766 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 7767 7768 77692) iASL Compiler/Disassembler and Tools: 7770 7771Implemented 3 new warnings for iASL, and implemented multiple warning 7772levels 7773(w2 flag). 7774 77751) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 7776not 7777WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 7778check for the possible timeout, a warning is issued. 7779 77802) Useless operators: If an ASL operator does not specify an optional 7781target 7782operand and it also does not use the function return value from the 7783operator, a warning is issued since the operator effectively does 7784nothing. 7785 77863) Unreferenced objects: If a namespace object is created, but never 7787referenced, a warning is issued. This is a warning level 2 since there 7788are 7789cases where this is ok, such as when a secondary table is loaded that 7790uses 7791the unreferenced objects. Even so, care is taken to only flag objects 7792that 7793don't look like they will ever be used. For example, the reserved methods 7794(starting with an underscore) are usually not referenced because it is 7795expected that the OS will invoke them. 7796 7797---------------------------------------- 779831 March 2006. Summary of changes for version 20060331: 7799 78001) ACPI CA Core Subsystem: 7801 7802Implemented header file support for the following additional ACPI tables: 7803ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 7804support, 7805all current and known ACPI tables are now defined in the ACPICA headers 7806and 7807are available for use by device drivers and other software. 7808 7809Implemented support to allow tables that contain ACPI names with invalid 7810characters to be loaded. Previously, this would cause the table load to 7811fail, but since there are several known cases of such tables on existing 7812machines, this change was made to enable ACPI support for them. Also, 7813this 7814matches the behavior of the Microsoft ACPI implementation. 7815 7816Fixed a couple regressions introduced during the memory optimization in 7817the 781820060317 release. The namespace node definition required additional 7819reorganization and an internal datatype that had been changed to 8-bit 7820was 7821restored to 32-bit. (Valery Podrezov) 7822 7823Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 7824could be passed through to AcpiOsReleaseObject which is unexpected. Such 7825null pointers are now trapped and ignored, matching the behavior of the 7826previous implementation before the deployment of AcpiOsReleaseObject. 7827(Valery Podrezov, Fiodor Suietov) 7828 7829Fixed a memory mapping leak during the deletion of a SystemMemory 7830operation 7831region where a cached memory mapping was not deleted. This became a 7832noticeable problem for operation regions that are defined within 7833frequently 7834used control methods. (Dana Meyers) 7835 7836Reorganized the ACPI table header files into two main files: one for the 7837ACPI tables consumed by the ACPICA core, and another for the 7838miscellaneous 7839ACPI tables that are consumed by the drivers and other software. The 7840various 7841FADT definitions were merged into one common section and three different 7842tables (ACPI 1.0, 1.0+, and 2.0) 7843 7844Example Code and Data Size: These are the sizes for the OS-independent 7845acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7846debug version of the code includes the debug output trace mechanism and 7847has 7848a much larger code and data size. 7849 7850 Previous Release: 7851 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 7852 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 7853 Current Release: 7854 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 7855 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 7856 7857 78582) iASL Compiler/Disassembler and Tools: 7859 7860Disassembler: Implemented support to decode and format all non-AML ACPI 7861tables (tables other than DSDTs and SSDTs.) This includes the new tables 7862added to the ACPICA headers, therefore all current and known ACPI tables 7863are 7864supported. 7865 7866Disassembler: The change to allow ACPI names with invalid characters also 7867enables the disassembly of such tables. Invalid characters within names 7868are 7869changed to '*' to make the name printable; the iASL compiler will still 7870generate an error for such names, however, since this is an invalid ACPI 7871character. 7872 7873Implemented an option for AcpiXtract (-a) to extract all tables found in 7874the 7875input file. The default invocation extracts only the DSDTs and SSDTs. 7876 7877Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 7878makefile for the AcpiXtract utility. 7879 7880---------------------------------------- 788117 March 2006. Summary of changes for version 20060317: 7882 78831) ACPI CA Core Subsystem: 7884 7885Implemented the use of a cache object for all internal namespace nodes. 7886Since there are about 1000 static nodes in a typical system, this will 7887decrease memory use for cache implementations that minimize per- 7888allocation 7889overhead (such as a slab allocator.) 7890 7891Removed the reference count mechanism for internal namespace nodes, since 7892it 7893was deemed unnecessary. This reduces the size of each namespace node by 7894about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 7895case, 7896and 32 bytes for the 64-bit case. 7897 7898Optimized several internal data structures to reduce object size on 64- 7899bit 7900platforms by packing data within the 64-bit alignment. This includes the 7901frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 7902instances corresponding to the namespace objects. 7903 7904Added two new strings for the predefined _OSI method: "Windows 2001.1 7905SP1" 7906and "Windows 2006". 7907 7908Split the allocation tracking mechanism out to a separate file, from 7909utalloc.c to uttrack.c. This mechanism appears to be only useful for 7910application-level code. Kernels may wish to not include uttrack.c in 7911distributions. 7912 7913Removed all remnants of the obsolete ACPI_REPORT_* macros and the 7914associated 7915code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 7916macros.) 7917 7918Code and Data Size: These are the sizes for the acpica.lib produced by 7919the 7920Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 7921ACPI 7922driver or OSPM code. The debug version of the code includes the debug 7923output 7924trace mechanism and has a much larger code and data size. Note that these 7925values will vary depending on the efficiency of the compiler and the 7926compiler options used during generation. 7927 7928 Previous Release: 7929 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 7930 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 7931 Current Release: 7932 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 7933 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 7934 7935 79362) iASL Compiler/Disassembler and Tools: 7937 7938Implemented an ANSI C version of the acpixtract utility. This version 7939will 7940automatically extract the DSDT and all SSDTs from the input acpidump text 7941file and dump the binary output to separate files. It can also display a 7942summary of the input file including the headers for each table found and 7943will extract any single ACPI table, with any signature. (See 7944source/tools/acpixtract) 7945 7946---------------------------------------- 794710 March 2006. Summary of changes for version 20060310: 7948 79491) ACPI CA Core Subsystem: 7950 7951Tagged all external interfaces to the subsystem with the new 7952ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 7953assist 7954kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 7955macro. The default definition is NULL. 7956 7957Added the ACPI_THREAD_ID type for the return value from 7958AcpiOsGetThreadId. 7959This allows the host to define this as necessary to simplify kernel 7960integration. The default definition is ACPI_NATIVE_UINT. 7961 7962Fixed two interpreter problems related to error processing, the deletion 7963of 7964objects, and placing invalid pointers onto the internal operator result 7965stack. BZ 6028, 6151 (Valery Podrezov) 7966 7967Increased the reference count threshold where a warning is emitted for 7968large 7969reference counts in order to eliminate unnecessary warnings on systems 7970with 7971large namespaces (especially 64-bit.) Increased the value from 0x400 to 79720x800. 7973 7974Due to universal disagreement as to the meaning of the 'c' in the 7975calloc() 7976function, the ACPI_MEM_CALLOCATE macro has been renamed to 7977ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 7978ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 7979ACPI_FREE. 7980 7981Code and Data Size: These are the sizes for the acpica.lib produced by 7982the 7983Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 7984ACPI 7985driver or OSPM code. The debug version of the code includes the debug 7986output 7987trace mechanism and has a much larger code and data size. Note that these 7988values will vary depending on the efficiency of the compiler and the 7989compiler options used during generation. 7990 7991 Previous Release: 7992 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 7993 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 7994 Current Release: 7995 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 7996 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 7997 7998 79992) iASL Compiler/Disassembler: 8000 8001Disassembler: implemented support for symbolic resource descriptor 8002references. If a CreateXxxxField operator references a fixed offset 8003within 8004a 8005resource descriptor, a name is assigned to the descriptor and the offset 8006is 8007translated to the appropriate resource tag and pathname. The addition of 8008this support brings the disassembled code very close to the original ASL 8009source code and helps eliminate run-time errors when the disassembled 8010code 8011is modified (and recompiled) in such a way as to invalidate the original 8012fixed offsets. 8013 8014Implemented support for a Descriptor Name as the last parameter to the 8015ASL 8016Register() macro. This parameter was inadvertently left out of the ACPI 8017specification, and will be added for ACPI 3.0b. 8018 8019Fixed a problem where the use of the "_OSI" string (versus the full path 8020"\_OSI") caused an internal compiler error. ("No back ptr to op") 8021 8022Fixed a problem with the error message that occurs when an invalid string 8023is 8024used for a _HID object (such as one with an embedded asterisk: 8025"*PNP010A".) 8026The correct message is now displayed. 8027 8028---------------------------------------- 802917 February 2006. Summary of changes for version 20060217: 8030 80311) ACPI CA Core Subsystem: 8032 8033Implemented a change to the IndexField support to match the behavior of 8034the 8035Microsoft AML interpreter. The value written to the Index register is now 8036a 8037byte offset, no longer an index based upon the width of the Data 8038register. 8039This should fix IndexField problems seen on some machines where the Data 8040register is not exactly one byte wide. The ACPI specification will be 8041clarified on this point. 8042 8043Fixed a problem where several resource descriptor types could overrun the 8044internal descriptor buffer due to size miscalculation: VendorShort, 8045VendorLong, and Interrupt. This was noticed on IA64 machines, but could 8046affect all platforms. 8047 8048Fixed a problem where individual resource descriptors were misaligned 8049within 8050the internal buffer, causing alignment faults on IA64 platforms. 8051 8052Code and Data Size: These are the sizes for the acpica.lib produced by 8053the 8054Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8055ACPI 8056driver or OSPM code. The debug version of the code includes the debug 8057output 8058trace mechanism and has a much larger code and data size. Note that these 8059values will vary depending on the efficiency of the compiler and the 8060compiler options used during generation. 8061 8062 Previous Release: 8063 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8064 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8065 Current Release: 8066 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8067 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8068 8069 80702) iASL Compiler/Disassembler: 8071 8072Implemented support for new reserved names: _WDG and _WED are Microsoft 8073extensions for Windows Instrumentation Management, _TDL is a new ACPI- 8074defined method (Throttling Depth Limit.) 8075 8076Fixed a problem where a zero-length VendorShort or VendorLong resource 8077descriptor was incorrectly emitted as a descriptor of length one. 8078 8079---------------------------------------- 808010 February 2006. Summary of changes for version 20060210: 8081 80821) ACPI CA Core Subsystem: 8083 8084Removed a couple of extraneous ACPI_ERROR messages that appeared during 8085normal execution. These became apparent after the conversion from 8086ACPI_DEBUG_PRINT. 8087 8088Fixed a problem where the CreateField operator could hang if the BitIndex 8089or 8090NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 8091 8092Fixed a problem where a DeRefOf operation on a buffer object incorrectly 8093failed with an exception. This also fixes a couple of related RefOf and 8094DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 8095 8096Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 8097of 8098AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 8099BZ 81005480) 8101 8102Implemented a memory cleanup at the end of the execution of each 8103iteration 8104of an AML While() loop, preventing the accumulation of outstanding 8105objects. 8106(Valery Podrezov, BZ 5427) 8107 8108Eliminated a chunk of duplicate code in the object resolution code. 8109(Valery 8110Podrezov, BZ 5336) 8111 8112Fixed several warnings during the 64-bit code generation. 8113 8114The AcpiSrc source code conversion tool now inserts one line of 8115whitespace 8116after an if() statement that is followed immediately by a comment, 8117improving 8118readability of the Linux code. 8119 8120Code and Data Size: The current and previous library sizes for the core 8121subsystem are shown below. These are the code and data sizes for the 8122acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8123These 8124values do not include any ACPI driver or OSPM code. The debug version of 8125the 8126code includes the debug output trace mechanism and has a much larger code 8127and data size. Note that these values will vary depending on the 8128efficiency 8129of the compiler and the compiler options used during generation. 8130 8131 Previous Release: 8132 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8133 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8134 Current Release: 8135 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8136 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8137 8138 81392) iASL Compiler/Disassembler: 8140 8141Fixed a problem with the disassembly of a BankField operator with a 8142complex 8143expression for the BankValue parameter. 8144 8145---------------------------------------- 814627 January 2006. Summary of changes for version 20060127: 8147 81481) ACPI CA Core Subsystem: 8149 8150Implemented support in the Resource Manager to allow unresolved 8151namestring 8152references within resource package objects for the _PRT method. This 8153support 8154is in addition to the previously implemented unresolved reference support 8155within the AML parser. If the interpreter slack mode is enabled, these 8156unresolved references will be passed through to the caller as a NULL 8157package 8158entry. 8159 8160Implemented and deployed new macros and functions for error and warning 8161messages across the subsystem. These macros are simpler and generate less 8162code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 8163ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 8164macros remain defined to allow ACPI drivers time to migrate to the new 8165macros. 8166 8167Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 8168the 8169Acquire/Release Lock OSL interfaces. 8170 8171Fixed a problem where Alias ASL operators are sometimes not correctly 8172resolved, in both the interpreter and the iASL compiler. 8173 8174Fixed several problems with the implementation of the 8175ConcatenateResTemplate 8176ASL operator. As per the ACPI specification, zero length buffers are now 8177treated as a single EndTag. One-length buffers always cause a fatal 8178exception. Non-zero length buffers that do not end with a full 2-byte 8179EndTag 8180cause a fatal exception. 8181 8182Fixed a possible structure overwrite in the AcpiGetObjectInfo external 8183interface. (With assistance from Thomas Renninger) 8184 8185Code and Data Size: The current and previous library sizes for the core 8186subsystem are shown below. These are the code and data sizes for the 8187acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8188These 8189values do not include any ACPI driver or OSPM code. The debug version of 8190the 8191code includes the debug output trace mechanism and has a much larger code 8192and data size. Note that these values will vary depending on the 8193efficiency 8194of the compiler and the compiler options used during generation. 8195 8196 Previous Release: 8197 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8198 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8199 Current Release: 8200 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8201 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8202 8203 82042) iASL Compiler/Disassembler: 8205 8206Fixed an internal error that was generated for any forward references to 8207ASL 8208Alias objects. 8209 8210---------------------------------------- 821113 January 2006. Summary of changes for version 20060113: 8212 82131) ACPI CA Core Subsystem: 8214 8215Added 2006 copyright to all module headers and signons. This affects 8216virtually every file in the ACPICA core subsystem, iASL compiler, and the 8217utilities. 8218 8219Enhanced the ACPICA error reporting in order to simplify user migration 8220to 8221the non-debug version of ACPICA. Replaced all instances of the 8222ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 8223debug 8224levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 8225respectively. This preserves all error and warning messages in the non- 8226debug 8227version of the ACPICA code (this has been referred to as the "debug lite" 8228option.) Over 200 cases were converted to create a total of over 380 8229error/warning messages across the ACPICA code. This increases the code 8230and 8231data size of the default non-debug version of the code somewhat (about 823213K), 8233but all error/warning reporting may be disabled if desired (and code 8234eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 8235configuration option. The size of the debug version of ACPICA remains 8236about 8237the same. 8238 8239Fixed a memory leak within the AML Debugger "Set" command. One object was 8240not properly deleted for every successful invocation of the command. 8241 8242Code and Data Size: The current and previous library sizes for the core 8243subsystem are shown below. These are the code and data sizes for the 8244acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8245These 8246values do not include any ACPI driver or OSPM code. The debug version of 8247the 8248code includes the debug output trace mechanism and has a much larger code 8249and data size. Note that these values will vary depending on the 8250efficiency 8251of the compiler and the compiler options used during generation. 8252 8253 Previous Release: 8254 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8255 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8256 Current Release: 8257 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 8258 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 8259 8260 82612) iASL Compiler/Disassembler: 8262 8263The compiler now officially supports the ACPI 3.0a specification that was 8264released on December 30, 2005. (Specification is available at 8265www.acpi.info) 8266 8267---------------------------------------- 826816 December 2005. Summary of changes for version 20051216: 8269 82701) ACPI CA Core Subsystem: 8271 8272Implemented optional support to allow unresolved names within ASL Package 8273objects. A null object is inserted in the package when a named reference 8274cannot be located in the current namespace. Enabled via the interpreter 8275slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 8276machines 8277that contain such code. 8278 8279Implemented an optimization to the initialization sequence that can 8280improve 8281boot time. During ACPI device initialization, the _STA method is now run 8282if 8283and only if the _INI method exists. The _STA method is used to determine 8284if 8285the device is present; An _INI can only be run if _STA returns present, 8286but 8287it is a waste of time to run the _STA method if the _INI does not exist. 8288(Prototype and assistance from Dong Wei) 8289 8290Implemented use of the C99 uintptr_t for the pointer casting macros if it 8291is 8292available in the current compiler. Otherwise, the default (void *) cast 8293is 8294used as before. 8295 8296Fixed some possible memory leaks found within the execution path of the 8297Break, Continue, If, and CreateField operators. (Valery Podrezov) 8298 8299Fixed a problem introduced in the 20051202 release where an exception is 8300generated during method execution if a control method attempts to declare 8301another method. 8302 8303Moved resource descriptor string constants that are used by both the AML 8304disassembler and AML debugger to the common utilities directory so that 8305these components are independent. 8306 8307Implemented support in the AcpiExec utility (-e switch) to globally 8308ignore 8309exceptions during control method execution (method is not aborted.) 8310 8311Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 8312generation. 8313 8314Code and Data Size: The current and previous library sizes for the core 8315subsystem are shown below. These are the code and data sizes for the 8316acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8317These 8318values do not include any ACPI driver or OSPM code. The debug version of 8319the 8320code includes the debug output trace mechanism and has a much larger code 8321and data size. Note that these values will vary depending on the 8322efficiency 8323of the compiler and the compiler options used during generation. 8324 8325 Previous Release: 8326 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8327 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8328 Current Release: 8329 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8330 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8331 8332 83332) iASL Compiler/Disassembler: 8334 8335Fixed a problem where a CPU stack overflow fault could occur if a 8336recursive 8337method call was made from within a Return statement. 8338 8339---------------------------------------- 834002 December 2005. Summary of changes for version 20051202: 8341 83421) ACPI CA Core Subsystem: 8343 8344Modified the parsing of control methods to no longer create namespace 8345objects during the first pass of the parse. Objects are now created only 8346during the execute phase, at the moment the namespace creation operator 8347is 8348encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 8349This 8350should eliminate ALREADY_EXISTS exceptions seen on some machines where 8351reentrant control methods are protected by an AML mutex. The mutex will 8352now 8353correctly block multiple threads from attempting to create the same 8354object 8355more than once. 8356 8357Increased the number of available Owner Ids for namespace object tracking 8358from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 8359on 8360some machines with a large number of ACPI tables (either static or 8361dynamic). 8362 8363Fixed a problem with the AcpiExec utility where a fault could occur when 8364the 8365-b switch (batch mode) is used. 8366 8367Enhanced the namespace dump routine to output the owner ID for each 8368namespace object. 8369 8370Code and Data Size: The current and previous library sizes for the core 8371subsystem are shown below. These are the code and data sizes for the 8372acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8373These 8374values do not include any ACPI driver or OSPM code. The debug version of 8375the 8376code includes the debug output trace mechanism and has a much larger code 8377and data size. Note that these values will vary depending on the 8378efficiency 8379of the compiler and the compiler options used during generation. 8380 8381 Previous Release: 8382 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8383 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8384 Current Release: 8385 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8386 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8387 8388 83892) iASL Compiler/Disassembler: 8390 8391Fixed a parse error during compilation of certain Switch/Case constructs. 8392To 8393simplify the parse, the grammar now allows for multiple Default 8394statements 8395and this error is now detected and flagged during the analysis phase. 8396 8397Disassembler: The disassembly now includes the contents of the original 8398table header within a comment at the start of the file. This includes the 8399name and version of the original ASL compiler. 8400 8401---------------------------------------- 840217 November 2005. Summary of changes for version 20051117: 8403 84041) ACPI CA Core Subsystem: 8405 8406Fixed a problem in the AML parser where the method thread count could be 8407decremented below zero if any errors occurred during the method parse 8408phase. 8409This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 8410machines. 8411This also fixed a related regression with the mechanism that detects and 8412corrects methods that cannot properly handle reentrancy (related to the 8413deployment of the new OwnerId mechanism.) 8414 8415Eliminated the pre-parsing of control methods (to detect errors) during 8416table load. Related to the problem above, this was causing unwind issues 8417if 8418any errors occurred during the parse, and it seemed to be overkill. A 8419table 8420load should not be aborted if there are problems with any single control 8421method, thus rendering this feature rather pointless. 8422 8423Fixed a problem with the new table-driven resource manager where an 8424internal 8425buffer overflow could occur for small resource templates. 8426 8427Implemented a new external interface, AcpiGetVendorResource. This 8428interface 8429will find and return a vendor-defined resource descriptor within a _CRS 8430or 8431_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 8432Helgaas. 8433 8434Removed the length limit (200) on string objects as per the upcoming ACPI 84353.0A specification. This affects the following areas of the interpreter: 84361) 8437any implicit conversion of a Buffer to a String, 2) a String object 8438result 8439of the ASL Concatentate operator, 3) the String object result of the ASL 8440ToString operator. 8441 8442Fixed a problem in the Windows OS interface layer (OSL) where a 8443WAIT_FOREVER 8444on a semaphore object would incorrectly timeout. This allows the 8445multithreading features of the AcpiExec utility to work properly under 8446Windows. 8447 8448Updated the Linux makefiles for the iASL compiler and AcpiExec to include 8449the recently added file named "utresrc.c". 8450 8451Code and Data Size: The current and previous library sizes for the core 8452subsystem are shown below. These are the code and data sizes for the 8453acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8454These 8455values do not include any ACPI driver or OSPM code. The debug version of 8456the 8457code includes the debug output trace mechanism and has a much larger code 8458and data size. Note that these values will vary depending on the 8459efficiency 8460of the compiler and the compiler options used during generation. 8461 8462 Previous Release: 8463 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8464 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8465 Current Release: 8466 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8467 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8468 8469 84702) iASL Compiler/Disassembler: 8471 8472Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 8473specification. For the iASL compiler, this means that string literals 8474within 8475the source ASL can be of any length. 8476 8477Enhanced the listing output to dump the AML code for resource descriptors 8478immediately after the ASL code for each descriptor, instead of in a block 8479at 8480the end of the entire resource template. 8481 8482Enhanced the compiler debug output to dump the entire original parse tree 8483constructed during the parse phase, before any transforms are applied to 8484the 8485tree. The transformed tree is dumped also. 8486 8487---------------------------------------- 848802 November 2005. Summary of changes for version 20051102: 8489 84901) ACPI CA Core Subsystem: 8491 8492Modified the subsystem initialization sequence to improve GPE support. 8493The 8494GPE initialization has been split into two parts in order to defer 8495execution 8496of the _PRW methods (Power Resources for Wake) until after the hardware 8497is 8498fully initialized and the SCI handler is installed. This allows the _PRW 8499methods to access fields protected by the Global Lock. This will fix 8500systems 8501where a NO_GLOBAL_LOCK exception has been seen during initialization. 8502 8503Converted the ACPI internal object disassemble and display code within 8504the 8505AML debugger to fully table-driven operation, reducing code size and 8506increasing maintainability. 8507 8508Fixed a regression with the ConcatenateResTemplate() ASL operator 8509introduced 8510in the 20051021 release. 8511 8512Implemented support for "local" internal ACPI object types within the 8513debugger "Object" command and the AcpiWalkNamespace external interfaces. 8514These local types include RegionFields, BankFields, IndexFields, Alias, 8515and 8516reference objects. 8517 8518Moved common AML resource handling code into a new file, "utresrc.c". 8519This 8520code is shared by both the Resource Manager and the AML Debugger. 8521 8522Code and Data Size: The current and previous library sizes for the core 8523subsystem are shown below. These are the code and data sizes for the 8524acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8525These 8526values do not include any ACPI driver or OSPM code. The debug version of 8527the 8528code includes the debug output trace mechanism and has a much larger code 8529and data size. Note that these values will vary depending on the 8530efficiency 8531of the compiler and the compiler options used during generation. 8532 8533 Previous Release: 8534 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8535 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8536 Current Release: 8537 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8538 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8539 8540 85412) iASL Compiler/Disassembler: 8542 8543Fixed a problem with very large initializer lists (more than 4000 8544elements) 8545for both Buffer and Package objects where the parse stack could overflow. 8546 8547Enhanced the pre-compile source code scan for non-ASCII characters to 8548ignore 8549characters within comment fields. The scan is now always performed and is 8550no 8551longer optional, detecting invalid characters within a source file 8552immediately rather than during the parse phase or later. 8553 8554Enhanced the ASL grammar definition to force early reductions on all 8555list- 8556style grammar elements so that the overall parse stack usage is greatly 8557reduced. This should improve performance and reduce the possibility of 8558parse 8559stack overflow. 8560 8561Eliminated all reduce/reduce conflicts in the iASL parser generation. 8562Also, 8563with the addition of a %expected statement, the compiler generates from 8564source with no warnings. 8565 8566Fixed a possible segment fault in the disassembler if the input filename 8567does not contain a "dot" extension (Thomas Renninger). 8568 8569---------------------------------------- 857021 October 2005. Summary of changes for version 20051021: 8571 85721) ACPI CA Core Subsystem: 8573 8574Implemented support for the EM64T and other x86-64 processors. This 8575essentially entails recognizing that these processors support non-aligned 8576memory transfers. Previously, all 64-bit processors were assumed to lack 8577hardware support for non-aligned transfers. 8578 8579Completed conversion of the Resource Manager to nearly full table-driven 8580operation. Specifically, the resource conversion code (convert AML to 8581internal format and the reverse) and the debug code to dump internal 8582resource descriptors are fully table-driven, reducing code and data size 8583and 8584improving maintainability. 8585 8586The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 8587word 8588on 64-bit processors instead of a fixed 32-bit word. (With assistance 8589from 8590Alexey Starikovskiy) 8591 8592Implemented support within the resource conversion code for the Type- 8593Specific byte within the various ACPI 3.0 *WordSpace macros. 8594 8595Fixed some issues within the resource conversion code for the type- 8596specific 8597flags for both Memory and I/O address resource descriptors. For Memory, 8598implemented support for the MTP and TTP flags. For I/O, split the TRS and 8599TTP flags into two separate fields. 8600 8601Code and Data Size: The current and previous library sizes for the core 8602subsystem are shown below. These are the code and data sizes for the 8603acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8604These 8605values do not include any ACPI driver or OSPM code. The debug version of 8606the 8607code includes the debug output trace mechanism and has a much larger code 8608and data size. Note that these values will vary depending on the 8609efficiency 8610of the compiler and the compiler options used during generation. 8611 8612 Previous Release: 8613 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 8614 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 8615 Current Release: 8616 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8617 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8618 8619 8620 86212) iASL Compiler/Disassembler: 8622 8623Relaxed a compiler restriction that disallowed a ResourceIndex byte if 8624the 8625corresponding ResourceSource string was not also present in a resource 8626descriptor declaration. This restriction caused problems with existing 8627AML/ASL code that includes the Index byte without the string. When such 8628AML 8629was disassembled, it could not be compiled without modification. Further, 8630the modified code created a resource template with a different size than 8631the 8632original, breaking code that used fixed offsets into the resource 8633template 8634buffer. 8635 8636Removed a recent feature of the disassembler to ignore a lone 8637ResourceIndex 8638byte. This byte is now emitted if present so that the exact AML can be 8639reproduced when the disassembled code is recompiled. 8640 8641Improved comments and text alignment for the resource descriptor code 8642emitted by the disassembler. 8643 8644Implemented disassembler support for the ACPI 3.0 AccessSize field within 8645a 8646Register() resource descriptor. 8647 8648---------------------------------------- 864930 September 2005. Summary of changes for version 20050930: 8650 86511) ACPI CA Core Subsystem: 8652 8653Completed a major overhaul of the Resource Manager code - specifically, 8654optimizations in the area of the AML/internal resource conversion code. 8655The 8656code has been optimized to simplify and eliminate duplicated code, CPU 8657stack 8658use has been decreased by optimizing function parameters and local 8659variables, and naming conventions across the manager have been 8660standardized 8661for clarity and ease of maintenance (this includes function, parameter, 8662variable, and struct/typedef names.) The update may force changes in some 8663driver code, depending on how resources are handled by the host OS. 8664 8665All Resource Manager dispatch and information tables have been moved to a 8666single location for clarity and ease of maintenance. One new file was 8667created, named "rsinfo.c". 8668 8669The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 8670guarantee that the argument is not evaluated twice, making them less 8671prone 8672to macro side-effects. However, since there exists the possibility of 8673additional stack use if a particular compiler cannot optimize them (such 8674as 8675in the debug generation case), the original macros are optionally 8676available. 8677Note that some invocations of the return_VALUE macro may now cause size 8678mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 8679to 8680eliminate these. (From Randy Dunlap) 8681 8682Implemented a new mechanism to enable debug tracing for individual 8683control 8684methods. A new external interface, AcpiDebugTrace, is provided to enable 8685this mechanism. The intent is to allow the host OS to easily enable and 8686disable tracing for problematic control methods. This interface can be 8687easily exposed to a user or debugger interface if desired. See the file 8688psxface.c for details. 8689 8690AcpiUtCallocate will now return a valid pointer if a length of zero is 8691specified - a length of one is used and a warning is issued. This matches 8692the behavior of AcpiUtAllocate. 8693 8694Code and Data Size: The current and previous library sizes for the core 8695subsystem are shown below. These are the code and data sizes for the 8696acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8697These 8698values do not include any ACPI driver or OSPM code. The debug version of 8699the 8700code includes the debug output trace mechanism and has a much larger code 8701and data size. Note that these values will vary depending on the 8702efficiency 8703of the compiler and the compiler options used during generation. 8704 8705 Previous Release: 8706 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 8707 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 8708 Current Release: 8709 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 8710 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 8711 8712 87132) iASL Compiler/Disassembler: 8714 8715A remark is issued if the effective compile-time length of a package or 8716buffer is zero. Previously, this was a warning. 8717 8718---------------------------------------- 871916 September 2005. Summary of changes for version 20050916: 8720 87211) ACPI CA Core Subsystem: 8722 8723Fixed a problem within the Resource Manager where support for the Generic 8724Register descriptor was not fully implemented. This descriptor is now 8725fully 8726recognized, parsed, disassembled, and displayed. 8727 8728Completely restructured the Resource Manager code to utilize table-driven 8729dispatch and lookup, eliminating many of the large switch() statements. 8730This 8731reduces overall subsystem code size and code complexity. Affects the 8732resource parsing and construction, disassembly, and debug dump output. 8733 8734Cleaned up and restructured the debug dump output for all resource 8735descriptors. Improved readability of the output and reduced code size. 8736 8737Fixed a problem where changes to internal data structures caused the 8738optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 8739 8740Code and Data Size: The current and previous library sizes for the core 8741subsystem are shown below. These are the code and data sizes for the 8742acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8743These 8744values do not include any ACPI driver or OSPM code. The debug version of 8745the 8746code includes the debug output trace mechanism and has a much larger code 8747and data size. Note that these values will vary depending on the 8748efficiency 8749of the compiler and the compiler options used during generation. 8750 8751 Previous Release: 8752 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 8753 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 8754 Current Release: 8755 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 8756 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 8757 8758 87592) iASL Compiler/Disassembler: 8760 8761Updated the disassembler to automatically insert an EndDependentFn() 8762macro 8763into the ASL stream if this macro is missing in the original AML code, 8764simplifying compilation of the resulting ASL module. 8765 8766Fixed a problem in the disassembler where a disassembled ResourceSource 8767string (within a large resource descriptor) was not surrounded by quotes 8768and 8769not followed by a comma, causing errors when the resulting ASL module was 8770compiled. Also, escape sequences within a ResourceSource string are now 8771handled correctly (especially "\\") 8772 8773---------------------------------------- 877402 September 2005. Summary of changes for version 20050902: 8775 87761) ACPI CA Core Subsystem: 8777 8778Fixed a problem with the internal Owner ID allocation and deallocation 8779mechanisms for control method execution and recursive method invocation. 8780This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 8781messages seen on some systems. Recursive method invocation depth is 8782currently limited to 255. (Alexey Starikovskiy) 8783 8784Completely eliminated all vestiges of support for the "module-level 8785executable code" until this support is fully implemented and debugged. 8786This 8787should eliminate the NO_RETURN_VALUE exceptions seen during table load on 8788some systems that invoke this support. 8789 8790Fixed a problem within the resource manager code where the transaction 8791flags 8792for a 64-bit address descriptor were handled incorrectly in the type- 8793specific flag byte. 8794 8795Consolidated duplicate code within the address descriptor resource 8796manager 8797code, reducing overall subsystem code size. 8798 8799Fixed a fault when using the AML debugger "disassemble" command to 8800disassemble individual control methods. 8801 8802Removed references to the "release_current" directory within the Unix 8803release package. 8804 8805Code and Data Size: The current and previous core subsystem library sizes 8806are shown below. These are the code and data sizes for the acpica.lib 8807produced by the Microsoft Visual C++ 6.0 compiler. These values do not 8808include any ACPI driver or OSPM code. The debug version of the code 8809includes 8810the debug output trace mechanism and has a much larger code and data 8811size. 8812Note that these values will vary depending on the efficiency of the 8813compiler 8814and the compiler options used during generation. 8815 8816 Previous Release: 8817 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8818 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 8819 Current Release: 8820 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 8821 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 8822 8823 88242) iASL Compiler/Disassembler: 8825 8826Implemented an error check for illegal duplicate values in the interrupt 8827and 8828dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 8829Interrupt(). 8830 8831Implemented error checking for the Irq() and IrqNoFlags() macros to 8832detect 8833too many values in the interrupt list (16 max) and invalid values in the 8834list (range 0 - 15) 8835 8836The maximum length string literal within an ASL file is now restricted to 8837200 characters as per the ACPI specification. 8838 8839Fixed a fault when using the -ln option (generate namespace listing). 8840 8841Implemented an error check to determine if a DescriptorName within a 8842resource descriptor has already been used within the current scope. 8843 8844---------------------------------------- 884515 August 2005. Summary of changes for version 20050815: 8846 88471) ACPI CA Core Subsystem: 8848 8849Implemented a full bytewise compare to determine if a table load request 8850is 8851attempting to load a duplicate table. The compare is performed if the 8852table 8853signatures and table lengths match. This will allow different tables with 8854the same OEM Table ID and revision to be loaded - probably against the 8855ACPI 8856specification, but discovered in the field nonetheless. 8857 8858Added the changes.txt logfile to each of the zipped release packages. 8859 8860Code and Data Size: Current and previous core subsystem library sizes are 8861shown below. These are the code and data sizes for the acpica.lib 8862produced 8863by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8864any ACPI driver or OSPM code. The debug version of the code includes the 8865debug output trace mechanism and has a much larger code and data size. 8866Note 8867that these values will vary depending on the efficiency of the compiler 8868and 8869the compiler options used during generation. 8870 8871 Previous Release: 8872 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8873 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 8874 Current Release: 8875 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8876 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 8877 8878 88792) iASL Compiler/Disassembler: 8880 8881Fixed a problem where incorrect AML code could be generated for Package 8882objects if optimization is disabled (via the -oa switch). 8883 8884Fixed a problem with where incorrect AML code is generated for variable- 8885length packages when the package length is not specified and the number 8886of 8887initializer values is greater than 255. 8888 8889 8890---------------------------------------- 889129 July 2005. Summary of changes for version 20050729: 8892 88931) ACPI CA Core Subsystem: 8894 8895Implemented support to ignore an attempt to install/load a particular 8896ACPI 8897table more than once. Apparently there exists BIOS code that repeatedly 8898attempts to load the same SSDT upon certain events. With assistance from 8899Venkatesh Pallipadi. 8900 8901Restructured the main interface to the AML parser in order to correctly 8902handle all exceptional conditions. This will prevent leakage of the 8903OwnerId 8904resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 8905some 8906machines. With assistance from Alexey Starikovskiy. 8907 8908Support for "module level code" has been disabled in this version due to 8909a 8910number of issues that have appeared on various machines. The support can 8911be 8912enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 8913compilation. When the issues are fully resolved, the code will be enabled 8914by 8915default again. 8916 8917Modified the internal functions for debug print support to define the 8918FunctionName parameter as a (const char *) for compatibility with 8919compiler 8920built-in macros such as __FUNCTION__, etc. 8921 8922Linted the entire ACPICA source tree for both 32-bit and 64-bit. 8923 8924Implemented support to display an object count summary for the AML 8925Debugger 8926commands Object and Methods. 8927 8928Code and Data Size: Current and previous core subsystem library sizes are 8929shown below. These are the code and data sizes for the acpica.lib 8930produced 8931by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8932any ACPI driver or OSPM code. The debug version of the code includes the 8933debug output trace mechanism and has a much larger code and data size. 8934Note 8935that these values will vary depending on the efficiency of the compiler 8936and 8937the compiler options used during generation. 8938 8939 Previous Release: 8940 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 8941 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 8942 Current Release: 8943 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8944 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 8945 8946 89472) iASL Compiler/Disassembler: 8948 8949Fixed a regression that appeared in the 20050708 version of the compiler 8950where an error message was inadvertently emitted for invocations of the 8951_OSI 8952reserved control method. 8953 8954---------------------------------------- 895508 July 2005. Summary of changes for version 20050708: 8956 89571) ACPI CA Core Subsystem: 8958 8959The use of the CPU stack in the debug version of the subsystem has been 8960considerably reduced. Previously, a debug structure was declared in every 8961function that used the debug macros. This structure has been removed in 8962favor of declaring the individual elements as parameters to the debug 8963functions. This reduces the cumulative stack use during nested execution 8964of 8965ACPI function calls at the cost of a small increase in the code size of 8966the 8967debug version of the subsystem. With assistance from Alexey Starikovskiy 8968and 8969Len Brown. 8970 8971Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 8972headers to define a macro that will return the current function name at 8973runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 8974by 8975the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 8976compiler-dependent header, the function name is saved on the CPU stack 8977(one 8978pointer per function.) This mechanism is used because apparently there 8979exists no standard ANSI-C defined macro that that returns the function 8980name. 8981 8982Redesigned and reimplemented the "Owner ID" mechanism used to track 8983namespace objects created/deleted by ACPI tables and control method 8984execution. A bitmap is now used to allocate and free the IDs, thus 8985solving 8986the wraparound problem present in the previous implementation. The size 8987of 8988the namespace node descriptor was reduced by 2 bytes as a result (Alexey 8989Starikovskiy). 8990 8991Removed the UINT32_BIT and UINT16_BIT types that were used for the 8992bitfield 8993flag definitions within the headers for the predefined ACPI tables. These 8994have been replaced by UINT8_BIT in order to increase the code portability 8995of 8996the subsystem. If the use of UINT8 remains a problem, we may be forced to 8997eliminate bitfields entirely because of a lack of portability. 8998 8999Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 9000This 9001is a frequently used function and this improvement increases the 9002performance 9003of the entire subsystem (Alexey Starikovskiy). 9004 9005Fixed several possible memory leaks and the inverse - premature object 9006deletion (Alexey Starikovskiy). 9007 9008Code and Data Size: Current and previous core subsystem library sizes are 9009shown below. These are the code and data sizes for the acpica.lib 9010produced 9011by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9012any ACPI driver or OSPM code. The debug version of the code includes the 9013debug output trace mechanism and has a much larger code and data size. 9014Note 9015that these values will vary depending on the efficiency of the compiler 9016and 9017the compiler options used during generation. 9018 9019 Previous Release: 9020 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9021 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9022 Current Release: 9023 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9024 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9025 9026---------------------------------------- 902724 June 2005. Summary of changes for version 20050624: 9028 90291) ACPI CA Core Subsystem: 9030 9031Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 9032the host-defined cache object. This allows the OSL implementation to 9033define 9034and type this object in any manner desired, simplifying the OSL 9035implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 9036Linux, and should be defined in the OS-specific header file for other 9037operating systems as required. 9038 9039Changed the interface to AcpiOsAcquireObject to directly return the 9040requested object as the function return (instead of ACPI_STATUS.) This 9041change was made for performance reasons, since this is the purpose of the 9042interface in the first place. AcpiOsAcquireObject is now similar to the 9043AcpiOsAllocate interface. 9044 9045Implemented a new AML debugger command named Businfo. This command 9046displays 9047information about all devices that have an associate _PRT object. The 9048_ADR, 9049_HID, _UID, and _CID are displayed for these devices. 9050 9051Modified the initialization sequence in AcpiInitializeSubsystem to call 9052the 9053OSL interface AcpiOslInitialize first, before any local initialization. 9054This 9055change was required because the global initialization now calls OSL 9056interfaces. 9057 9058Enhanced the Dump command to display the entire contents of Package 9059objects 9060(including all sub-objects and their values.) 9061 9062Restructured the code base to split some files because of size and/or 9063because the code logically belonged in a separate file. New files are 9064listed 9065below. All makefiles and project files included in the ACPI CA release 9066have 9067been updated. 9068 utilities/utcache.c /* Local cache interfaces */ 9069 utilities/utmutex.c /* Local mutex support */ 9070 utilities/utstate.c /* State object support */ 9071 interpreter/parser/psloop.c /* Main AML parse loop */ 9072 9073Code and Data Size: Current and previous core subsystem library sizes are 9074shown below. These are the code and data sizes for the acpica.lib 9075produced 9076by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9077any ACPI driver or OSPM code. The debug version of the code includes the 9078debug output trace mechanism and has a much larger code and data size. 9079Note 9080that these values will vary depending on the efficiency of the compiler 9081and 9082the compiler options used during generation. 9083 9084 Previous Release: 9085 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9086 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9087 Current Release: 9088 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9089 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9090 9091 90922) iASL Compiler/Disassembler: 9093 9094Fixed a regression introduced in version 20050513 where the use of a 9095Package 9096object within a Case() statement caused a compile time exception. The 9097original behavior has been restored (a Match() operator is emitted.) 9098 9099---------------------------------------- 910017 June 2005. Summary of changes for version 20050617: 9101 91021) ACPI CA Core Subsystem: 9103 9104Moved the object cache operations into the OS interface layer (OSL) to 9105allow 9106the host OS to handle these operations if desired (for example, the Linux 9107OSL will invoke the slab allocator). This support is optional; the 9108compile 9109time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 9110cache 9111code in the ACPI CA core. The new OSL interfaces are shown below. See 9112utalloc.c for an example implementation, and acpiosxf.h for the exact 9113interface definitions. With assistance from Alexey Starikovskiy. 9114 AcpiOsCreateCache 9115 AcpiOsDeleteCache 9116 AcpiOsPurgeCache 9117 AcpiOsAcquireObject 9118 AcpiOsReleaseObject 9119 9120Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 9121return 9122and restore a flags parameter. This fits better with many OS lock models. 9123Note: the current execution state (interrupt handler or not) is no longer 9124passed to these interfaces. If necessary, the OSL must determine this 9125state 9126by itself, a simple and fast operation. With assistance from Alexey 9127Starikovskiy. 9128 9129Fixed a problem in the ACPI table handling where a valid XSDT was assumed 9130present if the revision of the RSDP was 2 or greater. According to the 9131ACPI 9132specification, the XSDT is optional in all cases, and the table manager 9133therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 9134Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 9135contain 9136only the RSDT. 9137 9138Fixed an interpreter problem with the Mid() operator in the case of an 9139input 9140string where the resulting output string is of zero length. It now 9141correctly 9142returns a valid, null terminated string object instead of a string object 9143with a null pointer. 9144 9145Fixed a problem with the control method argument handling to allow a 9146store 9147to an Arg object that already contains an object of type Device. The 9148Device 9149object is now correctly overwritten. Previously, an error was returned. 9150 9151 9152Enhanced the debugger Find command to emit object values in addition to 9153the 9154found object pathnames. The output format is the same as the dump 9155namespace 9156command. 9157 9158Enhanced the debugger Set command. It now has the ability to set the 9159value 9160of any Named integer object in the namespace (Previously, only method 9161locals 9162and args could be set.) 9163 9164Code and Data Size: Current and previous core subsystem library sizes are 9165shown below. These are the code and data sizes for the acpica.lib 9166produced 9167by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9168any ACPI driver or OSPM code. The debug version of the code includes the 9169debug output trace mechanism and has a much larger code and data size. 9170Note 9171that these values will vary depending on the efficiency of the compiler 9172and 9173the compiler options used during generation. 9174 9175 Previous Release: 9176 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9177 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9178 Current Release: 9179 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9180 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9181 9182 91832) iASL Compiler/Disassembler: 9184 9185Fixed a regression in the disassembler where if/else/while constructs 9186were 9187output incorrectly. This problem was introduced in the previous release 9188(20050526). This problem also affected the single-step disassembly in the 9189debugger. 9190 9191Fixed a problem where compiling the reserved _OSI method would randomly 9192(but 9193rarely) produce compile errors. 9194 9195Enhanced the disassembler to emit compilable code in the face of 9196incorrect 9197AML resource descriptors. If the optional ResourceSourceIndex is present, 9198but the ResourceSource is not, do not emit the ResourceSourceIndex in the 9199disassembly. Otherwise, the resulting code cannot be compiled without 9200errors. 9201 9202---------------------------------------- 920326 May 2005. Summary of changes for version 20050526: 9204 92051) ACPI CA Core Subsystem: 9206 9207Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 9208the module level (not within a control method.) These opcodes are 9209executed 9210exactly once at the time the table is loaded. This type of code was legal 9211up 9212until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 9213in 9214order to provide backwards compatibility with earlier BIOS 9215implementations. 9216This eliminates the "Encountered executable code at module level" warning 9217that was previously generated upon detection of such code. 9218 9219Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 9220inadvertently be generated during the lookup of namespace objects in the 9221second pass parse of ACPI tables and control methods. It appears that 9222this 9223problem could occur during the resolution of forward references to 9224namespace 9225objects. 9226 9227Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 9228corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 9229allows the deadlock detection debug code to be compiled out in the normal 9230case, improving mutex performance (and overall subsystem performance) 9231considerably. 9232 9233Implemented a handful of miscellaneous fixes for possible memory leaks on 9234error conditions and error handling control paths. These fixes were 9235suggested by FreeBSD and the Coverity Prevent source code analysis tool. 9236 9237Added a check for a null RSDT pointer in AcpiGetFirmwareTable 9238(tbxfroot.c) 9239to prevent a fault in this error case. 9240 9241Code and Data Size: Current and previous core subsystem library sizes are 9242shown below. These are the code and data sizes for the acpica.lib 9243produced 9244by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9245any ACPI driver or OSPM code. The debug version of the code includes the 9246debug output trace mechanism and has a much larger code and data size. 9247Note 9248that these values will vary depending on the efficiency of the compiler 9249and 9250the compiler options used during generation. 9251 9252 Previous Release: 9253 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9254 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9255 Current Release: 9256 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9257 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9258 9259 92602) iASL Compiler/Disassembler: 9261 9262Implemented support to allow Type 1 and Type 2 ASL operators to appear at 9263the module level (not within a control method.) These operators will be 9264executed once at the time the table is loaded. This type of code was 9265legal 9266up until the release of ACPI 2.0B (2002) and is now supported by the iASL 9267compiler in order to provide backwards compatibility with earlier BIOS 9268ASL 9269code. 9270 9271The ACPI integer width (specified via the table revision ID or the -r 9272override, 32 or 64 bits) is now used internally during compile-time 9273constant 9274folding to ensure that constants are truncated to 32 bits if necessary. 9275Previously, the revision ID value was only emitted in the AML table 9276header. 9277 9278An error message is now generated for the Mutex and Method operators if 9279the 9280SyncLevel parameter is outside the legal range of 0 through 15. 9281 9282Fixed a problem with the Method operator ParameterTypes list handling 9283(ACPI 92843.0). Previously, more than 2 types or 2 arguments generated a syntax 9285error. 9286The actual underlying implementation of method argument typechecking is 9287still under development, however. 9288 9289---------------------------------------- 929013 May 2005. Summary of changes for version 20050513: 9291 92921) ACPI CA Core Subsystem: 9293 9294Implemented support for PCI Express root bridges -- added support for 9295device 9296PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 9297 9298The interpreter now automatically truncates incoming 64-bit constants to 929932 9300bits if currently executing out of a 32-bit ACPI table (Revision < 2). 9301This 9302also affects the iASL compiler constant folding. (Note: as per below, the 9303iASL compiler no longer allows 64-bit constants within 32-bit tables.) 9304 9305Fixed a problem where string and buffer objects with "static" pointers 9306(pointers to initialization data within an ACPI table) were not handled 9307consistently. The internal object copy operation now always copies the 9308data 9309to a newly allocated buffer, regardless of whether the source object is 9310static or not. 9311 9312Fixed a problem with the FromBCD operator where an implicit result 9313conversion was improperly performed while storing the result to the 9314target 9315operand. Since this is an "explicit conversion" operator, the implicit 9316conversion should never be performed on the output. 9317 9318Fixed a problem with the CopyObject operator where a copy to an existing 9319named object did not always completely overwrite the existing object 9320stored 9321at name. Specifically, a buffer-to-buffer copy did not delete the 9322existing 9323buffer. 9324 9325Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 9326and 9327structs for consistency. 9328 9329Code and Data Size: Current and previous core subsystem library sizes are 9330shown below. These are the code and data sizes for the acpica.lib 9331produced 9332by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9333any ACPI driver or OSPM code. The debug version of the code includes the 9334debug output trace mechanism and has a much larger code and data size. 9335Note 9336that these values will vary depending on the efficiency of the compiler 9337and 9338the compiler options used during generation. 9339 9340 Previous Release: 9341 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9342 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9343 Current Release: (Same sizes) 9344 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9345 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9346 9347 93482) iASL Compiler/Disassembler: 9349 9350The compiler now emits a warning if an attempt is made to generate a 64- 9351bit 9352integer constant from within a 32-bit ACPI table (Revision < 2). The 9353integer 9354is truncated to 32 bits. 9355 9356Fixed a problem with large package objects: if the static length of the 9357package is greater than 255, the "variable length package" opcode is 9358emitted. Previously, this caused an error. This requires an update to the 9359ACPI spec, since it currently (incorrectly) states that packages larger 9360than 9361255 elements are not allowed. 9362 9363The disassembler now correctly handles variable length packages and 9364packages 9365larger than 255 elements. 9366 9367---------------------------------------- 936808 April 2005. Summary of changes for version 20050408: 9369 93701) ACPI CA Core Subsystem: 9371 9372Fixed three cases in the interpreter where an "index" argument to an ASL 9373function was still (internally) 32 bits instead of the required 64 bits. 9374This was the Index argument to the Index, Mid, and Match operators. 9375 9376The "strupr" function is now permanently local (AcpiUtStrupr), since this 9377is 9378not a POSIX-defined function and not present in most kernel-level C 9379libraries. All references to the C library strupr function have been 9380removed 9381from the headers. 9382 9383Completed the deployment of static functions/prototypes. All prototypes 9384with 9385the static attribute have been moved from the headers to the owning C 9386file. 9387 9388Implemented an extract option (-e) for the AcpiBin utility (AML binary 9389utility). This option allows the utility to extract individual ACPI 9390tables 9391from the output of AcpiDmp. It provides the same functionality of the 9392acpixtract.pl perl script without the worry of setting the correct perl 9393options. AcpiBin runs on Windows and has not yet been generated/validated 9394in 9395the Linux/Unix environment (but should be soon). 9396 9397Updated and fixed the table dump option for AcpiBin (-d). This option 9398converts a single ACPI table to a hex/ascii file, similar to the output 9399of 9400AcpiDmp. 9401 9402Code and Data Size: Current and previous core subsystem library sizes are 9403shown below. These are the code and data sizes for the acpica.lib 9404produced 9405by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9406any ACPI driver or OSPM code. The debug version of the code includes the 9407debug output trace mechanism and has a much larger code and data size. 9408Note 9409that these values will vary depending on the efficiency of the compiler 9410and 9411the compiler options used during generation. 9412 9413 Previous Release: 9414 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9415 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9416 Current Release: 9417 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9418 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9419 9420 94212) iASL Compiler/Disassembler: 9422 9423Disassembler fix: Added a check to ensure that the table length found in 9424the 9425ACPI table header within the input file is not longer than the actual 9426input 9427file size. This indicates some kind of file or table corruption. 9428 9429---------------------------------------- 943029 March 2005. Summary of changes for version 20050329: 9431 94321) ACPI CA Core Subsystem: 9433 9434An error is now generated if an attempt is made to create a Buffer Field 9435of 9436length zero (A CreateField with a length operand of zero.) 9437 9438The interpreter now issues a warning whenever executable code at the 9439module 9440level is detected during ACPI table load. This will give some idea of the 9441prevalence of this type of code. 9442 9443Implemented support for references to named objects (other than control 9444methods) within package objects. 9445 9446Enhanced package object output for the debug object. Package objects are 9447now 9448completely dumped, showing all elements. 9449 9450Enhanced miscellaneous object output for the debug object. Any object can 9451now be written to the debug object (for example, a device object can be 9452written, and the type of the object will be displayed.) 9453 9454The "static" qualifier has been added to all local functions across both 9455the 9456core subsystem and the iASL compiler. 9457 9458The number of "long" lines (> 80 chars) within the source has been 9459significantly reduced, by about 1/3. 9460 9461Cleaned up all header files to ensure that all CA/iASL functions are 9462prototyped (even static functions) and the formatting is consistent. 9463 9464Two new header files have been added, acopcode.h and acnames.h. 9465 9466Removed several obsolete functions that were no longer used. 9467 9468Code and Data Size: Current and previous core subsystem library sizes are 9469shown below. These are the code and data sizes for the acpica.lib 9470produced 9471by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9472any ACPI driver or OSPM code. The debug version of the code includes the 9473debug output trace mechanism and has a much larger code and data size. 9474Note 9475that these values will vary depending on the efficiency of the compiler 9476and 9477the compiler options used during generation. 9478 9479 Previous Release: 9480 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9481 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9482 Current Release: 9483 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9484 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9485 9486 9487 94882) iASL Compiler/Disassembler: 9489 9490Fixed a problem with the resource descriptor generation/support. For the 9491ResourceSourceIndex and the ResourceSource fields, both must be present, 9492or 9493both must be not present - can't have one without the other. 9494 9495The compiler now returns non-zero from the main procedure if any errors 9496have 9497occurred during the compilation. 9498 9499 9500---------------------------------------- 950109 March 2005. Summary of changes for version 20050309: 9502 95031) ACPI CA Core Subsystem: 9504 9505The string-to-buffer implicit conversion code has been modified again 9506after 9507a change to the ACPI specification. In order to match the behavior of 9508the 9509other major ACPI implementation, the target buffer is no longer truncated 9510if 9511the source string is smaller than an existing target buffer. This change 9512requires an update to the ACPI spec, and should eliminate the recent 9513AE_AML_BUFFER_LIMIT issues. 9514 9515The "implicit return" support was rewritten to a new algorithm that 9516solves 9517the general case. Rather than attempt to determine when a method is about 9518to 9519exit, the result of every ASL operator is saved momentarily until the 9520very 9521next ASL operator is executed. Therefore, no matter how the method exits, 9522there will always be a saved implicit return value. This feature is only 9523enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 9524eliminate 9525AE_AML_NO_RETURN_VALUE errors when enabled. 9526 9527Implemented implicit conversion support for the predicate (operand) of 9528the 9529If, Else, and While operators. String and Buffer arguments are 9530automatically 9531converted to Integers. 9532 9533Changed the string-to-integer conversion behavior to match the new ACPI 9534errata: "If no integer object exists, a new integer is created. The ASCII 9535string is interpreted as a hexadecimal constant. Each string character is 9536interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 9537with the first character as the most significant digit, and ending with 9538the 9539first non-hexadecimal character or end-of-string." This means that the 9540first 9541non-hex character terminates the conversion and this is the code that was 9542changed. 9543 9544Fixed a problem where the ObjectType operator would fail (fault) when 9545used 9546on an Index of a Package which pointed to a null package element. The 9547operator now properly returns zero (Uninitialized) in this case. 9548 9549Fixed a problem where the While operator used excessive memory by not 9550properly popping the result stack during execution. There was no memory 9551leak 9552after execution, however. (Code provided by Valery Podrezov.) 9553 9554Fixed a problem where references to control methods within Package 9555objects 9556caused the method to be invoked, instead of producing a reference object 9557pointing to the method. 9558 9559Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 9560to 9561improve performance and reduce code size. (Code provided by Alexey 9562Starikovskiy.) 9563 9564Code and Data Size: Current and previous core subsystem library sizes are 9565shown below. These are the code and data sizes for the acpica.lib 9566produced 9567by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9568any ACPI driver or OSPM code. The debug version of the code includes the 9569debug output trace mechanism and has a much larger code and data size. 9570Note 9571that these values will vary depending on the efficiency of the compiler 9572and 9573the compiler options used during generation. 9574 9575 Previous Release: 9576 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9577 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9578 Current Release: 9579 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9580 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9581 9582 95832) iASL Compiler/Disassembler: 9584 9585Fixed a problem with the Return operator with no arguments. Since the AML 9586grammar for the byte encoding requires an operand for the Return opcode, 9587the 9588compiler now emits a Return(Zero) for this case. An ACPI specification 9589update has been written for this case. 9590 9591For tables other than the DSDT, namepath optimization is automatically 9592disabled. This is because SSDTs can be loaded anywhere in the namespace, 9593the 9594compiler has no knowledge of where, and thus cannot optimize namepaths. 9595 9596Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 9597inadvertently omitted from the ACPI specification, and will require an 9598update to the spec. 9599 9600The source file scan for ASCII characters is now optional (-a). This 9601change 9602was made because some vendors place non-ascii characters within comments. 9603However, the scan is simply a brute-force byte compare to ensure all 9604characters in the file are in the range 0x00 to 0x7F. 9605 9606Fixed a problem with the CondRefOf operator where the compiler was 9607inappropriately checking for the existence of the target. Since the point 9608of 9609the operator is to check for the existence of the target at run-time, the 9610compiler no longer checks for the target existence. 9611 9612Fixed a problem where errors generated from the internal AML interpreter 9613during constant folding were not handled properly, causing a fault. 9614 9615Fixed a problem with overly aggressive range checking for the Stall 9616operator. The valid range (max 255) is now only checked if the operand is 9617of 9618type Integer. All other operand types cannot be statically checked. 9619 9620Fixed a problem where control method references within the RefOf, 9621DeRefOf, 9622and ObjectType operators were not treated properly. They are now treated 9623as 9624actual references, not method invocations. 9625 9626Fixed and enhanced the "list namespace" option (-ln). This option was 9627broken 9628a number of releases ago. 9629 9630Improved error handling for the Field, IndexField, and BankField 9631operators. 9632The compiler now cleanly reports and recovers from errors in the field 9633component (FieldUnit) list. 9634 9635Fixed a disassembler problem where the optional ResourceDescriptor fields 9636TRS and TTP were not always handled correctly. 9637 9638Disassembler - Comments in output now use "//" instead of "/*" 9639 9640---------------------------------------- 964128 February 2005. Summary of changes for version 20050228: 9642 96431) ACPI CA Core Subsystem: 9644 9645Fixed a problem where the result of an Index() operator (an object 9646reference) must increment the reference count on the target object for 9647the 9648life of the object reference. 9649 9650Implemented AML Interpreter and Debugger support for the new ACPI 3.0 9651Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 9652WordSpace 9653resource descriptors. 9654 9655Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 9656Space Descriptor" string, indicating interpreter support for the 9657descriptors 9658above. 9659 9660Implemented header support for the new ACPI 3.0 FADT flag bits. 9661 9662Implemented header support for the new ACPI 3.0 PCI Express bits for the 9663PM1 9664status/enable registers. 9665 9666Updated header support for the MADT processor local Apic struct and MADT 9667platform interrupt source struct for new ACPI 3.0 fields. 9668 9669Implemented header support for the SRAT and SLIT ACPI tables. 9670 9671Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 9672flag 9673at runtime. 9674 9675Code and Data Size: Current and previous core subsystem library sizes are 9676shown below. These are the code and data sizes for the acpica.lib 9677produced 9678by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9679any ACPI driver or OSPM code. The debug version of the code includes the 9680debug output trace mechanism and has a much larger code and data size. 9681Note 9682that these values will vary depending on the efficiency of the compiler 9683and 9684the compiler options used during generation. 9685 9686 Previous Release: 9687 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 9688 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 9689 Current Release: 9690 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9691 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9692 9693 96942) iASL Compiler/Disassembler: 9695 9696Fixed a problem with the internal 64-bit String-to-integer conversion 9697with 9698strings less than two characters long. 9699 9700Fixed a problem with constant folding where the result of the Index() 9701operator can not be considered a constant. This means that Index() cannot 9702be 9703a type3 opcode and this will require an update to the ACPI specification. 9704 9705Disassembler: Implemented support for the TTP, MTP, and TRS resource 9706descriptor fields. These fields were inadvertently ignored and not output 9707in 9708the disassembly of the resource descriptor. 9709 9710 9711 ---------------------------------------- 971211 February 2005. Summary of changes for version 20050211: 9713 97141) ACPI CA Core Subsystem: 9715 9716Implemented ACPI 3.0 support for implicit conversion within the Match() 9717operator. MatchObjects can now be of type integer, buffer, or string 9718instead 9719of just type integer. Package elements are implicitly converted to the 9720type 9721of the MatchObject. This change aligns the behavior of Match() with the 9722behavior of the other logical operators (LLess(), etc.) It also requires 9723an 9724errata change to the ACPI specification as this support was intended for 9725ACPI 3.0, but was inadvertently omitted. 9726 9727Fixed a problem with the internal implicit "to buffer" conversion. 9728Strings 9729that are converted to buffers will cause buffer truncation if the string 9730is 9731smaller than the target buffer. Integers that are converted to buffers 9732will 9733not cause buffer truncation, only zero extension (both as per the ACPI 9734spec.) The problem was introduced when code was added to truncate the 9735buffer, but this should not be performed in all cases, only the string 9736case. 9737 9738Fixed a problem with the Buffer and Package operators where the 9739interpreter 9740would get confused if two such operators were used as operands to an ASL 9741operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 9742stack was not being popped after the execution of these operators, 9743resulting 9744in an AE_NO_RETURN_VALUE exception. 9745 9746Fixed a problem with constructs of the form Store(Index(...),...). The 9747reference object returned from Index was inadvertently resolved to an 9748actual 9749value. This problem was introduced in version 20050114 when the behavior 9750of 9751Store() was modified to restrict the object types that can be used as the 9752source operand (to match the ACPI specification.) 9753 9754Reduced excessive stack use within the AcpiGetObjectInfo procedure. 9755 9756Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 9757 9758Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 9759 9760Code and Data Size: Current and previous core subsystem library sizes are 9761shown below. These are the code and data sizes for the acpica.lib 9762produced 9763by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9764any ACPI driver or OSPM code. The debug version of the code includes the 9765debug output trace mechanism and has a much larger code and data size. 9766Note 9767that these values will vary depending on the efficiency of the compiler 9768and 9769the compiler options used during generation. 9770 9771 Previous Release: 9772 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 9773 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 9774 Current Release: 9775 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 9776 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 9777 9778 97792) iASL Compiler/Disassembler: 9780 9781Fixed a code generation problem in the constant folding optimization code 9782where incorrect code was generated if a constant was reduced to a buffer 9783object (i.e., a reduced type 5 opcode.) 9784 9785Fixed a typechecking problem for the ToBuffer operator. Caused by an 9786incorrect return type in the internal opcode information table. 9787 9788---------------------------------------- 978925 January 2005. Summary of changes for version 20050125: 9790 97911) ACPI CA Core Subsystem: 9792 9793Fixed a recently introduced problem with the Global Lock where the 9794underlying semaphore was not created. This problem was introduced in 9795version 20050114, and caused an AE_AML_NO_OPERAND exception during an 9796Acquire() operation on _GL. 9797 9798The local object cache is now optional, and is disabled by default. Both 9799AcpiExec and the iASL compiler enable the cache because they run in user 9800mode and this enhances their performance. #define 9801ACPI_ENABLE_OBJECT_CACHE 9802to enable the local cache. 9803 9804Fixed an issue in the internal function AcpiUtEvaluateObject concerning 9805the 9806optional "implicit return" support where an error was returned if no 9807return 9808object was expected, but one was implicitly returned. AE_OK is now 9809returned 9810in this case and the implicitly returned object is deleted. 9811AcpiUtEvaluateObject is only occasionally used, and only to execute 9812reserved 9813methods such as _STA and _INI where the return type is known up front. 9814 9815Fixed a few issues with the internal convert-to-integer code. It now 9816returns 9817an error if an attempt is made to convert a null string, a string of only 9818blanks/tabs, or a zero-length buffer. This affects both implicit 9819conversion 9820and explicit conversion via the ToInteger() operator. 9821 9822The internal debug code in AcpiUtAcquireMutex has been commented out. It 9823is 9824not needed for normal operation and should increase the performance of 9825the 9826entire subsystem. The code remains in case it is needed for debug 9827purposes 9828again. 9829 9830The AcpiExec source and makefile are included in the Unix/Linux package 9831for 9832the first time. 9833 9834Code and Data Size: Current and previous core subsystem library sizes are 9835shown below. These are the code and data sizes for the acpica.lib 9836produced 9837by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9838any ACPI driver or OSPM code. The debug version of the code includes the 9839debug output trace mechanism and has a much larger code and data size. 9840Note 9841that these values will vary depending on the efficiency of the compiler 9842and 9843the compiler options used during generation. 9844 9845 Previous Release: 9846 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 9847 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 9848 Current Release: 9849 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 9850 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 9851 98522) iASL Compiler/Disassembler: 9853 9854Switch/Case support: A warning is now issued if the type of the Switch 9855value 9856cannot be determined at compile time. For example, Switch(Arg0) will 9857generate the warning, and the type is assumed to be an integer. As per 9858the 9859ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 9860the 9861warning. 9862 9863Switch/Case support: Implemented support for buffer and string objects as 9864the switch value. This is an ACPI 3.0 feature, now that LEqual supports 9865buffers and strings. 9866 9867Switch/Case support: The emitted code for the LEqual() comparisons now 9868uses 9869the switch value as the first operand, not the second. The case value is 9870now 9871the second operand, and this allows the case value to be implicitly 9872converted to the type of the switch value, not the other way around. 9873 9874Switch/Case support: Temporary variables are now emitted immediately 9875within 9876the control method, not at the global level. This means that there are 9877now 987836 temps available per-method, not 36 temps per-module as was the case 9879with 9880the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 9881 9882---------------------------------------- 988314 January 2005. Summary of changes for version 20050114: 9884 9885Added 2005 copyright to all module headers. This affects every module in 9886the core subsystem, iASL compiler, and the utilities. 9887 98881) ACPI CA Core Subsystem: 9889 9890Fixed an issue with the String-to-Buffer conversion code where the string 9891null terminator was not included in the buffer after conversion, but 9892there 9893is existing ASL that assumes the string null terminator is included. This 9894is 9895the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 9896introduced in the previous version when the code was updated to correctly 9897set the converted buffer size as per the ACPI specification. The ACPI 9898spec 9899is ambiguous and will be updated to specify that the null terminator must 9900be 9901included in the converted buffer. This also affects the ToBuffer() ASL 9902operator. 9903 9904Fixed a problem with the Mid() ASL/AML operator where it did not work 9905correctly on Buffer objects. Newly created sub-buffers were not being 9906marked 9907as initialized. 9908 9909 9910Fixed a problem in AcpiTbFindTable where incorrect string compares were 9911performed on the OemId and OemTableId table header fields. These fields 9912are 9913not null terminated, so strncmp is now used instead of strcmp. 9914 9915Implemented a restriction on the Store() ASL/AML operator to align the 9916behavior with the ACPI specification. Previously, any object could be 9917used 9918as the source operand. Now, the only objects that may be used are 9919Integers, 9920Buffers, Strings, Packages, Object References, and DDB Handles. If 9921necessary, the original behavior can be restored by enabling the 9922EnableInterpreterSlack flag. 9923 9924Enhanced the optional "implicit return" support to allow an implicit 9925return 9926value from methods that are invoked externally via the AcpiEvaluateObject 9927interface. This enables implicit returns from the _STA and _INI methods, 9928for example. 9929 9930Changed the Revision() ASL/AML operator to return the current version of 9931the 9932AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 9933returned 9934the supported ACPI version (This is the function of the _REV method). 9935 9936Updated the _REV predefined method to return the currently supported 9937version 9938of ACPI, now 3. 9939 9940Implemented batch mode option for the AcpiExec utility (-b). 9941 9942Code and Data Size: Current and previous core subsystem library sizes are 9943shown below. These are the code and data sizes for the acpica.lib 9944produced 9945by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9946any ACPI driver or OSPM code. The debug version of the code includes the 9947debug output trace mechanism and has a much larger code and data size. 9948Note 9949that these values will vary depending on the efficiency of the compiler 9950and 9951the compiler options used during generation. 9952 9953 Previous Release: 9954 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9955 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 9956 Current Release: 9957 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 9958 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 9959 9960---------------------------------------- 996110 December 2004. Summary of changes for version 20041210: 9962 9963ACPI 3.0 support is nearing completion in both the iASL compiler and the 9964ACPI CA core subsystem. 9965 99661) ACPI CA Core Subsystem: 9967 9968Fixed a problem in the ToDecimalString operator where the resulting 9969string 9970length was incorrectly calculated. The length is now calculated exactly, 9971eliminating incorrect AE_STRING_LIMIT exceptions. 9972 9973Fixed a problem in the ToHexString operator to allow a maximum 200 9974character 9975string to be produced. 9976 9977Fixed a problem in the internal string-to-buffer and buffer-to-buffer 9978copy 9979routine where the length of the resulting buffer was not truncated to the 9980new size (if the target buffer already existed). 9981 9982Code and Data Size: Current and previous core subsystem library sizes are 9983shown below. These are the code and data sizes for the acpica.lib 9984produced 9985by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9986any ACPI driver or OSPM code. The debug version of the code includes the 9987debug output trace mechanism and has a much larger code and data size. 9988Note 9989that these values will vary depending on the efficiency of the compiler 9990and 9991the compiler options used during generation. 9992 9993 Previous Release: 9994 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9995 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 9996 Current Release: 9997 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9998 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 9999 10000 100012) iASL Compiler/Disassembler: 10002 10003Implemented the new ACPI 3.0 resource template macros - DWordSpace, 10004ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 10005Includes support in the disassembler. 10006 10007Implemented support for the new (ACPI 3.0) parameter to the Register 10008macro, 10009AccessSize. 10010 10011Fixed a problem where the _HE resource name for the Interrupt macro was 10012referencing bit 0 instead of bit 1. 10013 10014Implemented check for maximum 255 interrupts in the Interrupt macro. 10015 10016Fixed a problem with the predefined resource descriptor names where 10017incorrect AML code was generated if the offset within the resource buffer 10018was 0 or 1. The optimizer shortened the AML code to a single byte opcode 10019but did not update the surrounding package lengths. 10020 10021Changes to the Dma macro: All channels within the channel list must be 10022in 10023the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 10024optional (default is BusMaster). 10025 10026Implemented check for maximum 7 data bytes for the VendorShort macro. 10027 10028The ReadWrite parameter is now optional for the Memory32 and similar 10029macros. 10030 10031---------------------------------------- 1003203 December 2004. Summary of changes for version 20041203: 10033 100341) ACPI CA Core Subsystem: 10035 10036The low-level field insertion/extraction code (exfldio) has been 10037completely 10038rewritten to eliminate unnecessary complexity, bugs, and boundary 10039conditions. 10040 10041Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 10042ToDecimalString 10043operators where the input operand could be inadvertently deleted if no 10044conversion was necessary (e.g., if the input to ToInteger was an Integer 10045object.) 10046 10047Fixed a problem with the ToDecimalString and ToHexString where an 10048incorrect 10049exception code was returned if the resulting string would be > 200 chars. 10050AE_STRING_LIMIT is now returned. 10051 10052Fixed a problem with the Concatenate operator where AE_OK was always 10053returned, even if the operation failed. 10054 10055Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 10056semaphores to be allocated. 10057 10058Code and Data Size: Current and previous core subsystem library sizes are 10059shown below. These are the code and data sizes for the acpica.lib 10060produced 10061by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10062any ACPI driver or OSPM code. The debug version of the code includes the 10063debug output trace mechanism and has a much larger code and data size. 10064Note 10065that these values will vary depending on the efficiency of the compiler 10066and 10067the compiler options used during generation. 10068 10069 Previous Release: 10070 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10071 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10072 Current Release: 10073 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10074 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10075 10076 100772) iASL Compiler/Disassembler: 10078 10079Fixed typechecking for the ObjectType and SizeOf operators. Problem was 10080recently introduced in 20041119. 10081 10082Fixed a problem with the ToUUID macro where the upper nybble of each 10083buffer 10084byte was inadvertently set to zero. 10085 10086---------------------------------------- 1008719 November 2004. Summary of changes for version 20041119: 10088 100891) ACPI CA Core Subsystem: 10090 10091Fixed a problem in the internal ConvertToInteger routine where new 10092integers 10093were not truncated to 32 bits for 32-bit ACPI tables. This routine 10094converts 10095buffers and strings to integers. 10096 10097Implemented support to store a value to an Index() on a String object. 10098This 10099is an ACPI 2.0 feature that had not yet been implemented. 10100 10101Implemented new behavior for storing objects to individual package 10102elements 10103(via the Index() operator). The previous behavior was to invoke the 10104implicit 10105conversion rules if an object was already present at the index. The new 10106behavior is to simply delete any existing object and directly store the 10107new 10108object. Although the ACPI specification seems unclear on this subject, 10109other 10110ACPI implementations behave in this manner. (This is the root of the 10111AE_BAD_HEX_CONSTANT issue.) 10112 10113Modified the RSDP memory scan mechanism to support the extended checksum 10114for 10115ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 10116RSDP signature is found with a valid checksum. 10117 10118Code and Data Size: Current and previous core subsystem library sizes are 10119shown below. These are the code and data sizes for the acpica.lib 10120produced 10121by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10122any ACPI driver or OSPM code. The debug version of the code includes the 10123debug output trace mechanism and has a much larger code and data size. 10124Note 10125that these values will vary depending on the efficiency of the compiler 10126and 10127the compiler options used during generation. 10128 10129 Previous Release: 10130 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10131 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10132 Current Release: 10133 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10134 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10135 10136 101372) iASL Compiler/Disassembler: 10138 10139Fixed a missing semicolon in the aslcompiler.y file. 10140 10141---------------------------------------- 1014205 November 2004. Summary of changes for version 20041105: 10143 101441) ACPI CA Core Subsystem: 10145 10146Implemented support for FADT revision 2. This was an interim table 10147(between 10148ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 10149 10150Implemented optional support to allow uninitialized LocalX and ArgX 10151variables in a control method. The variables are initialized to an 10152Integer 10153object with a value of zero. This support is enabled by setting the 10154AcpiGbl_EnableInterpreterSlack flag to TRUE. 10155 10156Implemented support for Integer objects for the SizeOf operator. Either 101574 10158or 8 is returned, depending on the current integer size (32-bit or 64- 10159bit, 10160depending on the parent table revision). 10161 10162Fixed a problem in the implementation of the SizeOf and ObjectType 10163operators 10164where the operand was resolved to a value too early, causing incorrect 10165return values for some objects. 10166 10167Fixed some possible memory leaks during exceptional conditions. 10168 10169Code and Data Size: Current and previous core subsystem library sizes are 10170shown below. These are the code and data sizes for the acpica.lib 10171produced 10172by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10173any ACPI driver or OSPM code. The debug version of the code includes the 10174debug output trace mechanism and has a much larger code and data size. 10175Note 10176that these values will vary depending on the efficiency of the compiler 10177and 10178the compiler options used during generation. 10179 10180 Previous Release: 10181 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10182 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10183 Current Release: 10184 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10185 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10186 10187 101882) iASL Compiler/Disassembler: 10189 10190Implemented support for all ACPI 3.0 reserved names and methods. 10191 10192Implemented all ACPI 3.0 grammar elements in the front-end, including 10193support for semicolons. 10194 10195Implemented the ACPI 3.0 Function() and ToUUID() macros 10196 10197Fixed a problem in the disassembler where a Scope() operator would not be 10198emitted properly if the target of the scope was in another table. 10199 10200---------------------------------------- 1020115 October 2004. Summary of changes for version 20041015: 10202 10203Note: ACPI CA is currently undergoing an in-depth and complete formal 10204evaluation to test/verify the following areas. Other suggestions are 10205welcome. This will result in an increase in the frequency of releases and 10206the number of bug fixes in the next few months. 10207 - Functional tests for all ASL/AML operators 10208 - All implicit/explicit type conversions 10209 - Bit fields and operation regions 10210 - 64-bit math support and 32-bit-only "truncated" math support 10211 - Exceptional conditions, both compiler and interpreter 10212 - Dynamic object deletion and memory leaks 10213 - ACPI 3.0 support when implemented 10214 - External interfaces to the ACPI subsystem 10215 10216 102171) ACPI CA Core Subsystem: 10218 10219Fixed two alignment issues on 64-bit platforms - within debug statements 10220in 10221AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 10222Address 10223field within the non-aligned ACPI generic address structure. 10224 10225Fixed a problem in the Increment and Decrement operators where incorrect 10226operand resolution could result in the inadvertent modification of the 10227original integer when the integer is passed into another method as an 10228argument and the arg is then incremented/decremented. 10229 10230Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 10231bit 10232BCD number were truncated during conversion. 10233 10234Fixed a problem in the ToDecimal operator where the length of the 10235resulting 10236string could be set incorrectly too long if the input operand was a 10237Buffer 10238object. 10239 10240Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 10241(0) 10242within a buffer would prematurely terminate a compare between buffer 10243objects. 10244 10245Added a check for string overflow (>200 characters as per the ACPI 10246specification) during the Concatenate operator with two string operands. 10247 10248Code and Data Size: Current and previous core subsystem library sizes are 10249shown below. These are the code and data sizes for the acpica.lib 10250produced 10251by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10252any ACPI driver or OSPM code. The debug version of the code includes the 10253debug output trace mechanism and has a much larger code and data size. 10254Note 10255that these values will vary depending on the efficiency of the compiler 10256and 10257the compiler options used during generation. 10258 10259 Previous Release: 10260 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10261 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10262 Current Release: 10263 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10264 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10265 10266 10267 102682) iASL Compiler/Disassembler: 10269 10270Allow the use of the ObjectType operator on uninitialized Locals and Args 10271(returns 0 as per the ACPI specification). 10272 10273Fixed a problem where the compiler would fault if there was a syntax 10274error 10275in the FieldName of all of the various CreateXXXField operators. 10276 10277Disallow the use of lower case letters within the EISAID macro, as per 10278the 10279ACPI specification. All EISAID strings must be of the form "UUUNNNN" 10280Where 10281U is an uppercase letter and N is a hex digit. 10282 10283 10284---------------------------------------- 1028506 October 2004. Summary of changes for version 20041006: 10286 102871) ACPI CA Core Subsystem: 10288 10289Implemented support for the ACPI 3.0 Timer operator. This ASL function 10290implements a 64-bit timer with 100 nanosecond granularity. 10291 10292Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 10293implement the ACPI 3.0 Timer operator. This allows the host OS to 10294implement 10295the timer with the best clock available. Also, it keeps the core 10296subsystem 10297out of the clock handling business, since the host OS (usually) performs 10298this function. 10299 10300Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 10301functions use a 64-bit address which is part of the packed ACPI Generic 10302Address Structure. Since the structure is non-aligned, the alignment 10303macros 10304are now used to extract the address to a local variable before use. 10305 10306Fixed a problem where the ToInteger operator assumed all input strings 10307were 10308hexadecimal. The operator now handles both decimal strings and hex 10309strings 10310(prefixed with "0x"). 10311 10312Fixed a problem where the string length in the string object created as a 10313result of the internal ConvertToString procedure could be incorrect. This 10314potentially affected all implicit conversions and also the 10315ToDecimalString 10316and ToHexString operators. 10317 10318Fixed two problems in the ToString operator. If the length parameter was 10319zero, an incorrect string object was created and the value of the input 10320length parameter was inadvertently changed from zero to Ones. 10321 10322Fixed a problem where the optional ResourceSource string in the 10323ExtendedIRQ 10324resource macro was ignored. 10325 10326Simplified the interfaces to the internal division functions, reducing 10327code 10328size and complexity. 10329 10330Code and Data Size: Current and previous core subsystem library sizes are 10331shown below. These are the code and data sizes for the acpica.lib 10332produced 10333by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10334any ACPI driver or OSPM code. The debug version of the code includes the 10335debug output trace mechanism and has a much larger code and data size. 10336Note 10337that these values will vary depending on the efficiency of the compiler 10338and 10339the compiler options used during generation. 10340 10341 Previous Release: 10342 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10343 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10344 Current Release: 10345 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10346 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10347 10348 103492) iASL Compiler/Disassembler: 10350 10351Implemented support for the ACPI 3.0 Timer operator. 10352 10353Fixed a problem where the Default() operator was inadvertently ignored in 10354a 10355Switch/Case block. This was a problem in the translation of the Switch 10356statement to If...Else pairs. 10357 10358Added support to allow a standalone Return operator, with no parentheses 10359(or 10360operands). 10361 10362Fixed a problem with code generation for the ElseIf operator where the 10363translated Else...If parse tree was improperly constructed leading to the 10364loss of some code. 10365 10366---------------------------------------- 1036722 September 2004. Summary of changes for version 20040922: 10368 103691) ACPI CA Core Subsystem: 10370 10371Fixed a problem with the implementation of the LNot() operator where 10372"Ones" 10373was not returned for the TRUE case. Changed the code to return Ones 10374instead 10375of (!Arg) which was usually 1. This change affects iASL constant folding 10376for 10377this operator also. 10378 10379Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 10380not 10381initialized properly -- Now zero the entire buffer in this case where the 10382buffer already exists. 10383 10384Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 10385Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 10386related code considerably. This will require changes/updates to all OS 10387interface layers (OSLs.) 10388 10389Implemented a new external interface, AcpiInstallExceptionHandler, to 10390allow 10391a system exception handler to be installed. This handler is invoked upon 10392any 10393run-time exception that occurs during control method execution. 10394 10395Added support for the DSDT in AcpiTbFindTable. This allows the 10396DataTableRegion() operator to access the local copy of the DSDT. 10397 10398Code and Data Size: Current and previous core subsystem library sizes are 10399shown below. These are the code and data sizes for the acpica.lib 10400produced 10401by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10402any ACPI driver or OSPM code. The debug version of the code includes the 10403debug output trace mechanism and has a much larger code and data size. 10404Note 10405that these values will vary depending on the efficiency of the compiler 10406and 10407the compiler options used during generation. 10408 10409 Previous Release: 10410 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10411 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10412 Current Release: 10413 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10414 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10415 10416 104172) iASL Compiler/Disassembler: 10418 10419Fixed a problem with constant folding and the LNot operator. LNot was 10420returning 1 in the TRUE case, not Ones as per the ACPI specification. 10421This 10422could result in the generation of an incorrect folded/reduced constant. 10423 10424End-Of-File is now allowed within a "//"-style comment. A parse error no 10425longer occurs if such a comment is at the very end of the input ASL 10426source 10427file. 10428 10429Implemented the "-r" option to override the Revision in the table header. 10430The initial use of this option will be to simplify the evaluation of the 10431AML 10432interpreter by allowing a single ASL source module to be compiled for 10433either 1043432-bit or 64-bit integers. 10435 10436 10437---------------------------------------- 1043827 August 2004. Summary of changes for version 20040827: 10439 104401) ACPI CA Core Subsystem: 10441 10442- Implemented support for implicit object conversion in the non-numeric 10443logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 10444and 10445LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 10446the second operand is implicitly converted on the fly to match the type 10447of 10448the first operand. For example: 10449 10450 LEqual (Source1, Source2) 10451 10452Source1 and Source2 must each evaluate to an integer, a string, or a 10453buffer. 10454The data type of Source1 dictates the required type of Source2. Source2 10455is 10456implicitly converted if necessary to match the type of Source1. 10457 10458- Updated and corrected the behavior of the string conversion support. 10459The 10460rules concerning conversion of buffers to strings (according to the ACPI 10461specification) are as follows: 10462 10463ToDecimalString - explicit byte-wise conversion of buffer to string of 10464decimal values (0-255) separated by commas. ToHexString - explicit byte- 10465wise 10466conversion of buffer to string of hex values (0-FF) separated by commas. 10467ToString - explicit byte-wise conversion of buffer to string. Byte-by- 10468byte 10469copy with no transform except NULL terminated. Any other implicit buffer- 10470to- 10471string conversion - byte-wise conversion of buffer to string of hex 10472values 10473(0-FF) separated by spaces. 10474 10475- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 10476 10477- Fixed a problem in AcpiNsGetPathnameLength where the returned length 10478was 10479one byte too short in the case of a node in the root scope. This could 10480cause a fault during debug output. 10481 10482- Code and Data Size: Current and previous core subsystem library sizes 10483are 10484shown below. These are the code and data sizes for the acpica.lib 10485produced 10486by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10487any ACPI driver or OSPM code. The debug version of the code includes the 10488debug output trace mechanism and has a much larger code and data size. 10489Note 10490that these values will vary depending on the efficiency of the compiler 10491and 10492the compiler options used during generation. 10493 10494 Previous Release: 10495 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10496 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10497 Current Release: 10498 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10499 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10500 10501 105022) iASL Compiler/Disassembler: 10503 10504- Fixed a Linux generation error. 10505 10506 10507---------------------------------------- 1050816 August 2004. Summary of changes for version 20040816: 10509 105101) ACPI CA Core Subsystem: 10511 10512Designed and implemented support within the AML interpreter for the so- 10513called "implicit return". This support returns the result of the last 10514ASL 10515operation within a control method, in the absence of an explicit Return() 10516operator. A few machines depend on this behavior, even though it is not 10517explicitly supported by the ASL language. It is optional support that 10518can 10519be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 10520 10521Removed support for the PCI_Config address space from the internal low 10522level 10523hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 10524support was not used internally, and would not work correctly anyway 10525because 10526the PCI bus number and segment number were not supported. There are 10527separate interfaces for PCI configuration space access because of the 10528unique 10529interface. 10530 10531Code and Data Size: Current and previous core subsystem library sizes are 10532shown below. These are the code and data sizes for the acpica.lib 10533produced 10534by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10535any ACPI driver or OSPM code. The debug version of the code includes the 10536debug output trace mechanism and has a much larger code and data size. 10537Note 10538that these values will vary depending on the efficiency of the compiler 10539and 10540the compiler options used during generation. 10541 10542 Previous Release: 10543 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10544 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10545 Current Release: 10546 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10547 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10548 10549 105502) iASL Compiler/Disassembler: 10551 10552Fixed a problem where constants in ASL expressions at the root level (not 10553within a control method) could be inadvertently truncated during code 10554generation. This problem was introduced in the 20040715 release. 10555 10556 10557---------------------------------------- 1055815 July 2004. Summary of changes for version 20040715: 10559 105601) ACPI CA Core Subsystem: 10561 10562Restructured the internal HW GPE interfaces to pass/track the current 10563state 10564of interrupts (enabled/disabled) in order to avoid possible deadlock and 10565increase flexibility of the interfaces. 10566 10567Implemented a "lexicographical compare" for String and Buffer objects 10568within 10569the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 10570- 10571as per further clarification to the ACPI specification. Behavior is 10572similar 10573to C library "strcmp". 10574 10575Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 10576external function. In the 32-bit non-debug case, the stack use has been 10577reduced from 168 bytes to 32 bytes. 10578 10579Deployed a new run-time configuration flag, 10580AcpiGbl_EnableInterpreterSlack, 10581whose purpose is to allow the AML interpreter to forgive certain bad AML 10582constructs. Default setting is FALSE. 10583 10584Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 10585IO 10586support code. If enabled, it allows field access to go beyond the end of 10587a 10588region definition if the field is within the region length rounded up to 10589the 10590next access width boundary (a common coding error.) 10591 10592Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 10593ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 10594these 10595symbols are lowercased by the latest version of the AcpiSrc tool. 10596 10597The prototypes for the PCI interfaces in acpiosxf.h have been updated to 10598rename "Register" to simply "Reg" to prevent certain compilers from 10599complaining. 10600 10601Code and Data Size: Current and previous core subsystem library sizes are 10602shown below. These are the code and data sizes for the acpica.lib 10603produced 10604by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10605any ACPI driver or OSPM code. The debug version of the code includes the 10606debug output trace mechanism and has a much larger code and data size. 10607Note 10608that these values will vary depending on the efficiency of the compiler 10609and 10610the compiler options used during generation. 10611 10612 Previous Release: 10613 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10614 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10615 Current Release: 10616 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10617 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10618 10619 106202) iASL Compiler/Disassembler: 10621 10622Implemented full support for Package objects within the Case() operator. 10623Note: The Break() operator is currently not supported within Case blocks 10624(TermLists) as there is some question about backward compatibility with 10625ACPI 106261.0 interpreters. 10627 10628 10629Fixed a problem where complex terms were not supported properly within 10630the 10631Switch() operator. 10632 10633Eliminated extraneous warning for compiler-emitted reserved names of the 10634form "_T_x". (Used in Switch/Case operators.) 10635 10636Eliminated optimization messages for "_T_x" objects and small constants 10637within the DefinitionBlock operator. 10638 10639 10640---------------------------------------- 1064115 June 2004. Summary of changes for version 20040615: 10642 106431) ACPI CA Core Subsystem: 10644 10645Implemented support for Buffer and String objects (as per ACPI 2.0) for 10646the 10647following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10648LLessEqual. 10649 10650All directory names in the entire source package are lower case, as they 10651were in earlier releases. 10652 10653Implemented "Disassemble" command in the AML debugger that will 10654disassemble 10655a single control method. 10656 10657Code and Data Size: Current and previous core subsystem library sizes are 10658shown below. These are the code and data sizes for the acpica.lib 10659produced 10660by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10661any ACPI driver or OSPM code. The debug version of the code includes the 10662debug output trace mechanism and has a much larger code and data size. 10663Note 10664that these values will vary depending on the efficiency of the compiler 10665and 10666the compiler options used during generation. 10667 10668 Previous Release: 10669 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 10670 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 10671 10672 Current Release: 10673 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10674 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10675 10676 106772) iASL Compiler/Disassembler: 10678 10679Implemented support for Buffer and String objects (as per ACPI 2.0) for 10680the 10681following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10682LLessEqual. 10683 10684All directory names in the entire source package are lower case, as they 10685were in earlier releases. 10686 10687Fixed a fault when using the -g or -d<nofilename> options if the FADT was 10688not found. 10689 10690Fixed an issue with the Windows version of the compiler where later 10691versions 10692of Windows place the FADT in the registry under the name "FADT" and not 10693"FACP" as earlier versions did. This applies when using the -g or - 10694d<nofilename> options. The compiler now looks for both strings as 10695necessary. 10696 10697Fixed a problem with compiler namepath optimization where a namepath 10698within 10699the Scope() operator could not be optimized if the namepath was a subpath 10700of 10701the current scope path. 10702 10703---------------------------------------- 1070427 May 2004. Summary of changes for version 20040527: 10705 107061) ACPI CA Core Subsystem: 10707 10708Completed a new design and implementation for EBDA (Extended BIOS Data 10709Area) 10710support in the RSDP scan code. The original code improperly scanned for 10711the 10712EBDA by simply scanning from memory location 0 to 0x400. The correct 10713method 10714is to first obtain the EBDA pointer from within the BIOS data area, then 10715scan 1K of memory starting at the EBDA pointer. There appear to be few 10716if 10717any machines that place the RSDP in the EBDA, however. 10718 10719Integrated a fix for a possible fault during evaluation of BufferField 10720arguments. Obsolete code that was causing the problem was removed. 10721 10722Found and fixed a problem in the Field Support Code where data could be 10723corrupted on a bit field read that starts on an aligned boundary but does 10724not end on an aligned boundary. Merged the read/write "datum length" 10725calculation code into a common procedure. 10726 10727Rolled in a couple of changes to the FreeBSD-specific header. 10728 10729 10730Code and Data Size: Current and previous core subsystem library sizes are 10731shown below. These are the code and data sizes for the acpica.lib 10732produced 10733by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10734any ACPI driver or OSPM code. The debug version of the code includes the 10735debug output trace mechanism and has a much larger code and data size. 10736Note 10737that these values will vary depending on the efficiency of the compiler 10738and 10739the compiler options used during generation. 10740 10741 Previous Release: 10742 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10743 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 10744 Current Release: 10745 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 10746 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 10747 10748 107492) iASL Compiler/Disassembler: 10750 10751Fixed a generation warning produced by some overly-verbose compilers for 10752a 1075364-bit constant. 10754 10755---------------------------------------- 1075614 May 2004. Summary of changes for version 20040514: 10757 107581) ACPI CA Core Subsystem: 10759 10760Fixed a problem where hardware GPE enable bits sometimes not set properly 10761during and after GPE method execution. Result of 04/27 changes. 10762 10763Removed extra "clear all GPEs" when sleeping/waking. 10764 10765Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 10766AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 10767to 10768the new AcpiEv* calls as appropriate. 10769 10770ACPI_OS_NAME was removed from the OS-specific headers. The default name 10771is 10772now "Microsoft Windows NT" for maximum compatibility. However this can 10773be 10774changed by modifying the acconfig.h file. 10775 10776Allow a single invocation of AcpiInstallNotifyHandler for a handler that 10777traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 10778 10779Run _INI methods on ThermalZone objects. This is against the ACPI 10780specification, but there is apparently ASL code in the field that has 10781these 10782_INI methods, and apparently "other" AML interpreters execute them. 10783 10784Performed a full 16/32/64 bit lint that resulted in some small changes. 10785 10786Added a sleep simulation command to the AML debugger to test sleep code. 10787 10788Code and Data Size: Current and previous core subsystem library sizes are 10789shown below. These are the code and data sizes for the acpica.lib 10790produced 10791by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10792any ACPI driver or OSPM code. The debug version of the code includes the 10793debug output trace mechanism and has a much larger code and data size. 10794Note 10795that these values will vary depending on the efficiency of the compiler 10796and 10797the compiler options used during generation. 10798 10799 Previous Release: 10800 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10801 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 10802 Current Release: 10803 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10804 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 10805 10806---------------------------------------- 1080727 April 2004. Summary of changes for version 20040427: 10808 108091) ACPI CA Core Subsystem: 10810 10811Completed a major overhaul of the GPE handling within ACPI CA. There are 10812now three types of GPEs: wake-only, runtime-only, and combination 10813wake/run. 10814The only GPEs allowed to be combination wake/run are for button-style 10815devices such as a control-method power button, control-method sleep 10816button, 10817or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 10818not 10819referenced by any _PRW methods are marked for "runtime" and hardware 10820enabled. Any GPE that is referenced by a _PRW method is marked for 10821"wake" 10822(and disabled at runtime). However, at sleep time, only those GPEs that 10823have been specifically enabled for wake via the AcpiEnableGpe interface 10824will 10825actually be hardware enabled. 10826 10827A new external interface has been added, AcpiSetGpeType(), that is meant 10828to 10829be used by device drivers to force a GPE to a particular type. It will 10830be 10831especially useful for the drivers for the button devices mentioned above. 10832 10833Completed restructuring of the ACPI CA initialization sequence so that 10834default operation region handlers are installed before GPEs are 10835initialized 10836and the _PRW methods are executed. This will prevent errors when the 10837_PRW 10838methods attempt to access system memory or I/O space. 10839 10840GPE enable/disable no longer reads the GPE enable register. We now keep 10841the 10842enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 10843thus no longer depend on the hardware to maintain these bits. 10844 10845Always clear the wake status and fixed/GPE status bits before sleep, even 10846for state S5. 10847 10848Improved the AML debugger output for displaying the GPE blocks and their 10849current status. 10850 10851Added new strings for the _OSI method, of the form "Windows 2001 SPx" 10852where 10853x = 0,1,2,3,4. 10854 10855Fixed a problem where the physical address was incorrectly calculated 10856when 10857the Load() operator was used to directly load from an Operation Region 10858(vs. 10859loading from a Field object.) Also added check for minimum table length 10860for 10861this case. 10862 10863Fix for multiple mutex acquisition. Restore original thread SyncLevel on 10864mutex release. 10865 10866Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 10867consistency with the other fields returned. 10868 10869Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 10870structure for each GPE in the system, so the size of this structure is 10871important. 10872 10873CPU stack requirement reduction: Cleaned up the method execution and 10874object 10875evaluation paths so that now a parameter structure is passed, instead of 10876copying the various method parameters over and over again. 10877 10878In evregion.c: Correctly exit and reenter the interpreter region if and 10879only if dispatching an operation region request to a user-installed 10880handler. 10881Do not exit/reenter when dispatching to a default handler (e.g., default 10882system memory or I/O handlers) 10883 10884 10885Notes for updating drivers for the new GPE support. The following 10886changes 10887must be made to ACPI-related device drivers that are attached to one or 10888more 10889GPEs: (This information will be added to the ACPI CA Programmer 10890Reference.) 10891 108921) AcpiInstallGpeHandler no longer automatically enables the GPE, you 10893must 10894explicitly call AcpiEnableGpe. 108952) There is a new interface called AcpiSetGpeType. This should be called 10896before enabling the GPE. Also, this interface will automatically disable 10897the GPE if it is currently enabled. 108983) AcpiEnableGpe no longer supports a GPE type flag. 10899 10900Specific drivers that must be changed: 109011) EC driver: 10902 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 10903AeGpeHandler, NULL); 10904 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 10905 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 10906 109072) Button Drivers (Power, Lid, Sleep): 10908Run _PRW method under parent device 10909If _PRW exists: /* This is a control-method button */ 10910 Extract GPE number and possibly GpeDevice 10911 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 10912 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 10913 10914For all other devices that have _PRWs, we automatically set the GPE type 10915to 10916ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 10917This 10918must be done on a selective basis, usually requiring some kind of user 10919app 10920to allow the user to pick the wake devices. 10921 10922 10923Code and Data Size: Current and previous core subsystem library sizes are 10924shown below. These are the code and data sizes for the acpica.lib 10925produced 10926by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10927any ACPI driver or OSPM code. The debug version of the code includes the 10928debug output trace mechanism and has a much larger code and data size. 10929Note 10930that these values will vary depending on the efficiency of the compiler 10931and 10932the compiler options used during generation. 10933 10934 Previous Release: 10935 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 10936 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 10937 Current Release: 10938 10939 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10940 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 10941 10942 10943 10944---------------------------------------- 1094502 April 2004. Summary of changes for version 20040402: 10946 109471) ACPI CA Core Subsystem: 10948 10949Fixed an interpreter problem where an indirect store through an ArgX 10950parameter was incorrectly applying the "implicit conversion rules" during 10951the store. From the ACPI specification: "If the target is a method local 10952or 10953argument (LocalX or ArgX), no conversion is performed and the result is 10954stored directly to the target". The new behavior is to disable implicit 10955conversion during ALL stores to an ArgX. 10956 10957Changed the behavior of the _PRW method scan to ignore any and all errors 10958returned by a given _PRW. This prevents the scan from aborting from the 10959failure of any single _PRW. 10960 10961Moved the runtime configuration parameters from the global init procedure 10962to 10963static variables in acglobal.h. This will allow the host to override the 10964default values easily. 10965 10966Code and Data Size: Current and previous core subsystem library sizes are 10967shown below. These are the code and data sizes for the acpica.lib 10968produced 10969by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10970any ACPI driver or OSPM code. The debug version of the code includes the 10971debug output trace mechanism and has a much larger code and data size. 10972Note 10973that these values will vary depending on the efficiency of the compiler 10974and 10975the compiler options used during generation. 10976 10977 Previous Release: 10978 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 10979 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 10980 Current Release: 10981 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 10982 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 10983 10984 109852) iASL Compiler/Disassembler: 10986 10987iASL now fully disassembles SSDTs. However, External() statements are 10988not 10989generated automatically for unresolved symbols at this time. This is a 10990planned feature for future implementation. 10991 10992Fixed a scoping problem in the disassembler that occurs when the type of 10993the 10994target of a Scope() operator is overridden. This problem caused an 10995incorrectly nested internal namespace to be constructed. 10996 10997Any warnings or errors that are emitted during disassembly are now 10998commented 10999out automatically so that the resulting file can be recompiled without 11000any 11001hand editing. 11002 11003---------------------------------------- 1100426 March 2004. Summary of changes for version 20040326: 11005 110061) ACPI CA Core Subsystem: 11007 11008Implemented support for "wake" GPEs via interaction between GPEs and the 11009_PRW methods. Every GPE that is pointed to by one or more _PRWs is 11010identified as a WAKE GPE and by default will no longer be enabled at 11011runtime. Previously, we were blindly enabling all GPEs with a 11012corresponding 11013_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 11014We 11015believe this has been the cause of thousands of "spurious" GPEs on some 11016systems. 11017 11018This new GPE behavior is can be reverted to the original behavior (enable 11019ALL GPEs at runtime) via a runtime flag. 11020 11021Fixed a problem where aliased control methods could not access objects 11022properly. The proper scope within the namespace was not initialized 11023(transferred to the target of the aliased method) before executing the 11024target method. 11025 11026Fixed a potential race condition on internal object deletion on the 11027return 11028object in AcpiEvaluateObject. 11029 11030Integrated a fix for resource descriptors where both _MEM and _MTP were 11031being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 11032wide, 0x0F instead of 0x03.) 11033 11034Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 11035preventing 11036a 11037fault in some cases. 11038 11039Updated Notify() values for debug statements in evmisc.c 11040 11041Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 11042 11043Code and Data Size: Current and previous core subsystem library sizes are 11044shown below. These are the code and data sizes for the acpica.lib 11045produced 11046by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11047any ACPI driver or OSPM code. The debug version of the code includes the 11048debug output trace mechanism and has a much larger code and data size. 11049Note 11050that these values will vary depending on the efficiency of the compiler 11051and 11052the compiler options used during generation. 11053 11054 Previous Release: 11055 11056 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11057 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11058 Current Release: 11059 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11060 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11061 11062---------------------------------------- 1106311 March 2004. Summary of changes for version 20040311: 11064 110651) ACPI CA Core Subsystem: 11066 11067Fixed a problem where errors occurring during the parse phase of control 11068method execution did not abort cleanly. For example, objects created and 11069installed in the namespace were not deleted. This caused all subsequent 11070invocations of the method to return the AE_ALREADY_EXISTS exception. 11071 11072Implemented a mechanism to force a control method to "Serialized" 11073execution 11074if the method attempts to create namespace objects. (The root of the 11075AE_ALREADY_EXISTS problem.) 11076 11077Implemented support for the predefined _OSI "internal" control method. 11078Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 11079and 11080"Windows 2001.1", and can be easily upgraded for new strings as 11081necessary. 11082This feature will allow "other" operating systems to execute the fully 11083tested, "Windows" code path through the ASL code 11084 11085Global Lock Support: Now allows multiple acquires and releases with any 11086internal thread. Removed concept of "owning thread" for this special 11087mutex. 11088 11089Fixed two functions that were inappropriately declaring large objects on 11090the 11091CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 11092during 11093method execution considerably. 11094 11095Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 11096S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 11097 11098Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 11099defined on the machine. 11100 11101Implemented two runtime options: One to force all control method 11102execution 11103to "Serialized" to mimic Windows behavior, another to disable _OSI 11104support 11105if it causes problems on a given machine. 11106 11107Code and Data Size: Current and previous core subsystem library sizes are 11108shown below. These are the code and data sizes for the acpica.lib 11109produced 11110by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11111any ACPI driver or OSPM code. The debug version of the code includes the 11112debug output trace mechanism and has a much larger code and data size. 11113Note 11114that these values will vary depending on the efficiency of the compiler 11115and 11116the compiler options used during generation. 11117 11118 Previous Release: 11119 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11120 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11121 Current Release: 11122 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11123 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11124 111252) iASL Compiler/Disassembler: 11126 11127Fixed an array size problem for FreeBSD that would cause the compiler to 11128fault. 11129 11130---------------------------------------- 1113120 February 2004. Summary of changes for version 20040220: 11132 11133 111341) ACPI CA Core Subsystem: 11135 11136Implemented execution of _SxD methods for Device objects in the 11137GetObjectInfo interface. 11138 11139Fixed calls to _SST method to pass the correct arguments. 11140 11141Added a call to _SST on wake to restore to "working" state. 11142 11143Check for End-Of-Buffer failure case in the WalkResources interface. 11144 11145Integrated fix for 64-bit alignment issue in acglobal.h by moving two 11146structures to the beginning of the file. 11147 11148After wake, clear GPE status register(s) before enabling GPEs. 11149 11150After wake, clear/enable power button. (Perhaps we should clear/enable 11151all 11152fixed events upon wake.) 11153 11154Fixed a couple of possible memory leaks in the Namespace manager. 11155 11156Integrated latest acnetbsd.h file. 11157 11158---------------------------------------- 1115911 February 2004. Summary of changes for version 20040211: 11160 11161 111621) ACPI CA Core Subsystem: 11163 11164Completed investigation and implementation of the call-by-reference 11165mechanism for control method arguments. 11166 11167Fixed a problem where a store of an object into an indexed package could 11168fail if the store occurs within a different method than the method that 11169created the package. 11170 11171Fixed a problem where the ToDecimal operator could return incorrect 11172results. 11173 11174Fixed a problem where the CopyObject operator could fail on some of the 11175more 11176obscure objects (e.g., Reference objects.) 11177 11178Improved the output of the Debug object to display buffer, package, and 11179index objects. 11180 11181Fixed a problem where constructs of the form "RefOf (ArgX)" did not 11182return 11183the expected result. 11184 11185Added permanent ACPI_REPORT_ERROR macros for all instances of the 11186ACPI_AML_INTERNAL exception. 11187 11188Integrated latest version of acfreebsd.h 11189 11190---------------------------------------- 1119116 January 2004. Summary of changes for version 20040116: 11192 11193The purpose of this release is primarily to update the copyright years in 11194each module, thus causing a huge number of diffs. There are a few small 11195functional changes, however. 11196 111971) ACPI CA Core Subsystem: 11198 11199Improved error messages when there is a problem finding one or more of 11200the 11201required base ACPI tables 11202 11203Reintroduced the definition of APIC_HEADER in actbl.h 11204 11205Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 11206 11207Removed extraneous reference to NewObj in dsmthdat.c 11208 112092) iASL compiler 11210 11211Fixed a problem introduced in December that disabled the correct 11212disassembly 11213of Resource Templates 11214 11215 11216---------------------------------------- 1121703 December 2003. Summary of changes for version 20031203: 11218 112191) ACPI CA Core Subsystem: 11220 11221Changed the initialization of Operation Regions during subsystem 11222init to perform two entire walks of the ACPI namespace; The first 11223to initialize the regions themselves, the second to execute the 11224_REG methods. This fixed some interdependencies across _REG 11225methods found on some machines. 11226 11227Fixed a problem where a Store(Local0, Local1) could simply update 11228the object reference count, and not create a new copy of the 11229object if the Local1 is uninitialized. 11230 11231Implemented support for the _SST reserved method during sleep 11232transitions. 11233 11234Implemented support to clear the SLP_TYP and SLP_EN bits when 11235waking up, this is apparently required by some machines. 11236 11237When sleeping, clear the wake status only if SleepState is not S5. 11238 11239Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 11240pointer arithmetic advanced a string pointer too far. 11241 11242Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 11243could be returned if the requested table has not been loaded. 11244 11245Within the support for IRQ resources, restructured the handling of 11246the active and edge/level bits. 11247 11248Fixed a few problems in AcpiPsxExecute() where memory could be 11249leaked under certain error conditions. 11250 11251Improved error messages for the cases where the ACPI mode could 11252not be entered. 11253 11254Code and Data Size: Current and previous core subsystem library 11255sizes are shown below. These are the code and data sizes for the 11256acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11257these values do not include any ACPI driver or OSPM code. The 11258debug version of the code includes the debug output trace 11259mechanism and has a much larger code and data size. Note that 11260these values will vary depending on the efficiency of the compiler 11261and the compiler options used during generation. 11262 11263 Previous Release (20031029): 11264 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11265 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11266 Current Release: 11267 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11268 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11269 112702) iASL Compiler/Disassembler: 11271 11272Implemented a fix for the iASL disassembler where a bad index was 11273generated. This was most noticeable on 64-bit platforms 11274 11275 11276---------------------------------------- 1127729 October 2003. Summary of changes for version 20031029: 11278 112791) ACPI CA Core Subsystem: 11280 11281 11282Fixed a problem where a level-triggered GPE with an associated 11283_Lxx control method was incorrectly cleared twice. 11284 11285Fixed a problem with the Field support code where an access can 11286occur beyond the end-of-region if the field is non-aligned but 11287extends to the very end of the parent region (resulted in an 11288AE_AML_REGION_LIMIT exception.) 11289 11290Fixed a problem with ACPI Fixed Events where an RT Clock handler 11291would not get invoked on an RTC event. The RTC event bitmasks for 11292the PM1 registers were not being initialized properly. 11293 11294Implemented support for executing _STA and _INI methods for 11295Processor objects. Although this is currently not part of the 11296ACPI specification, there is existing ASL code that depends on the 11297init-time execution of these methods. 11298 11299Implemented and deployed a GetDescriptorName function to decode 11300the various types of internal descriptors. Guards against null 11301descriptors during debug output also. 11302 11303Implemented and deployed a GetNodeName function to extract the 4- 11304character namespace node name. This function simplifies the debug 11305and error output, as well as guarding against null pointers during 11306output. 11307 11308Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 11309simplify the debug and error output of 64-bit integers. This 11310macro replaces the HIDWORD and LODWORD macros for dumping these 11311integers. 11312 11313Updated the implementation of the Stall() operator to only call 11314AcpiOsStall(), and also return an error if the operand is larger 11315than 255. This preserves the required behavior of not 11316relinquishing the processor, as would happen if AcpiOsSleep() was 11317called for "long stalls". 11318 11319Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 11320initialized are now treated as NOOPs. 11321 11322Cleaned up a handful of warnings during 64-bit generation. 11323 11324Fixed a reported error where and incorrect GPE number was passed 11325to the GPE dispatch handler. This value is only used for error 11326output, however. Used this opportunity to clean up and streamline 11327the GPE dispatch code. 11328 11329Code and Data Size: Current and previous core subsystem library 11330sizes are shown below. These are the code and data sizes for the 11331acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11332these values do not include any ACPI driver or OSPM code. The 11333 11334debug version of the code includes the debug output trace 11335mechanism and has a much larger code and data size. Note that 11336these values will vary depending on the efficiency of the compiler 11337and the compiler options used during generation. 11338 11339 Previous Release (20031002): 11340 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11341 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11342 Current Release: 11343 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11344 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11345 11346 113472) iASL Compiler/Disassembler: 11348 11349Updated the iASL compiler to return an error if the operand to the 11350Stall() operator is larger than 255. 11351 11352 11353---------------------------------------- 1135402 October 2003. Summary of changes for version 20031002: 11355 11356 113571) ACPI CA Core Subsystem: 11358 11359Fixed a problem with Index Fields where the index was not 11360incremented for fields that require multiple writes to the 11361index/data registers (Fields that are wider than the data 11362register.) 11363 11364Fixed a problem with all Field objects where a write could go 11365beyond the end-of-field if the field was larger than the access 11366granularity and therefore required multiple writes to complete the 11367request. An extra write beyond the end of the field could happen 11368inadvertently. 11369 11370Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 11371would incorrectly be returned if the width of the Data Register 11372was larger than the specified field access width. 11373 11374Completed fixes for LoadTable() and Unload() and verified their 11375operation. Implemented full support for the "DdbHandle" object 11376throughout the ACPI CA subsystem. 11377 11378Implemented full support for the MADT and ECDT tables in the ACPI 11379CA header files. Even though these tables are not directly 11380consumed by ACPI CA, the header definitions are useful for ACPI 11381device drivers. 11382 11383Integrated resource descriptor fixes posted to the Linux ACPI 11384list. This included checks for minimum descriptor length, and 11385support for trailing NULL strings within descriptors that have 11386optional string elements. 11387 11388Code and Data Size: Current and previous core subsystem library 11389sizes are shown below. These are the code and data sizes for the 11390acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11391these values do not include any ACPI driver or OSPM code. The 11392debug version of the code includes the debug output trace 11393mechanism and has a much larger code and data size. Note that 11394these values will vary depending on the efficiency of the compiler 11395and the compiler options used during generation. 11396 11397 Previous Release (20030918): 11398 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11399 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11400 Current Release: 11401 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11402 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11403 11404 114052) iASL Compiler: 11406 11407Implemented detection of non-ASCII characters within the input 11408source ASL file. This catches attempts to compile binary (AML) 11409files early in the compile, with an informative error message. 11410 11411Fixed a problem where the disassembler would fault if the output 11412filename could not be generated or if the output file could not be 11413opened. 11414 11415---------------------------------------- 1141618 September 2003. Summary of changes for version 20030918: 11417 11418 114191) ACPI CA Core Subsystem: 11420 11421Found and fixed a longstanding problem with the late execution of 11422the various deferred AML opcodes (such as Operation Regions, 11423Buffer Fields, Buffers, and Packages). If the name string 11424specified for the name of the new object placed the object in a 11425scope other than the current scope, the initialization/execution 11426of the opcode failed. The solution to this problem was to 11427implement a mechanism where the late execution of such opcodes 11428does not attempt to lookup/create the name a second time in an 11429incorrect scope. This fixes the "region size computed 11430incorrectly" problem. 11431 11432Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 11433Global Lock AE_BAD_PARAMETER error. 11434 11435Fixed several 64-bit issues with prototypes, casting and data 11436types. 11437 11438Removed duplicate prototype from acdisasm.h 11439 11440Fixed an issue involving EC Operation Region Detach (Shaohua Li) 11441 11442Code and Data Size: Current and previous core subsystem library 11443sizes are shown below. These are the code and data sizes for the 11444acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11445these values do not include any ACPI driver or OSPM code. The 11446debug version of the code includes the debug output trace 11447mechanism and has a much larger code and data size. Note that 11448these values will vary depending on the efficiency of the compiler 11449and the compiler options used during generation. 11450 11451 Previous Release: 11452 11453 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11454 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11455 Current Release: 11456 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11457 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11458 11459 114602) Linux: 11461 11462Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 11463correct sleep time in seconds. 11464 11465---------------------------------------- 1146614 July 2003. Summary of changes for version 20030619: 11467 114681) ACPI CA Core Subsystem: 11469 11470Parse SSDTs in order discovered, as opposed to reverse order 11471(Hrvoje Habjanic) 11472 11473Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 11474Klausner, 11475 Nate Lawson) 11476 11477 114782) Linux: 11479 11480Dynamically allocate SDT list (suggested by Andi Kleen) 11481 11482proc function return value cleanups (Andi Kleen) 11483 11484Correctly handle NMI watchdog during long stalls (Andrew Morton) 11485 11486Make it so acpismp=force works (reported by Andrew Morton) 11487 11488 11489---------------------------------------- 1149019 June 2003. Summary of changes for version 20030619: 11491 114921) ACPI CA Core Subsystem: 11493 11494Fix To/FromBCD, eliminating the need for an arch-specific #define. 11495 11496Do not acquire a semaphore in the S5 shutdown path. 11497 11498Fix ex_digits_needed for 0. (Takayoshi Kochi) 11499 11500Fix sleep/stall code reversal. (Andi Kleen) 11501 11502Revert a change having to do with control method calling 11503semantics. 11504 115052) Linux: 11506 11507acpiphp update (Takayoshi Kochi) 11508 11509Export acpi_disabled for sonypi (Stelian Pop) 11510 11511Mention acpismp=force in config help 11512 11513Re-add acpitable.c and acpismp=force. This improves backwards 11514 11515compatibility and also cleans up the code to a significant degree. 11516 11517Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 11518 11519---------------------------------------- 1152022 May 2003. Summary of changes for version 20030522: 11521 115221) ACPI CA Core Subsystem: 11523 11524Found and fixed a reported problem where an AE_NOT_FOUND error 11525occurred occasionally during _BST evaluation. This turned out to 11526be an Owner ID allocation issue where a called method did not get 11527a new ID assigned to it. Eventually, (after 64k calls), the Owner 11528ID UINT16 would wraparound so that the ID would be the same as the 11529caller's and the called method would delete the caller's 11530namespace. 11531 11532Implemented extended error reporting for control methods that are 11533aborted due to a run-time exception. Output includes the exact 11534AML instruction that caused the method abort, a dump of the method 11535locals and arguments at the time of the abort, and a trace of all 11536nested control method calls. 11537 11538Modified the interpreter to allow the creation of buffers of zero 11539length from the AML code. Implemented new code to ensure that no 11540attempt is made to actually allocate a memory buffer (of length 11541zero) - instead, a simple buffer object with a NULL buffer pointer 11542and length zero is created. A warning is no longer issued when 11543the AML attempts to create a zero-length buffer. 11544 11545Implemented a workaround for the "leading asterisk issue" in 11546_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 11547asterisk is automatically removed if present in any HID, UID, or 11548CID strings. The iASL compiler will still flag this asterisk as 11549an error, however. 11550 11551Implemented full support for _CID methods that return a package of 11552multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 11553now additionally returns a device _CID list if present. This 11554required a change to the external interface in order to pass an 11555ACPI_BUFFER object as a parameter since the _CID list is of 11556variable length. 11557 11558Fixed a problem with the new AE_SAME_HANDLER exception where 11559handler initialization code did not know about this exception. 11560 11561Code and Data Size: Current and previous core subsystem library 11562sizes are shown below. These are the code and data sizes for the 11563acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11564these values do not include any ACPI driver or OSPM code. The 11565debug version of the code includes the debug output trace 11566mechanism and has a much larger code and data size. Note that 11567these values will vary depending on the efficiency of the compiler 11568and the compiler options used during generation. 11569 11570 Previous Release (20030509): 11571 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11572 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11573 Current Release: 11574 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11575 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11576 11577 115782) Linux: 11579 11580Fixed a bug in which we would reinitialize the ACPI interrupt 11581after it was already working, thus disabling all ACPI and the IRQs 11582for any other device sharing the interrupt. (Thanks to Stian 11583Jordet) 11584 11585Toshiba driver update (John Belmonte) 11586 11587Return only 0 or 1 for our interrupt handler status (Andrew 11588Morton) 11589 11590 115913) iASL Compiler: 11592 11593Fixed a reported problem where multiple (nested) ElseIf() 11594statements were not handled correctly by the compiler, resulting 11595in incorrect warnings and incorrect AML code. This was a problem 11596in both the ASL parser and the code generator. 11597 11598 115994) Documentation: 11600 11601Added changes to existing interfaces, new exception codes, and new 11602text concerning reference count object management versus garbage 11603collection. 11604 11605---------------------------------------- 1160609 May 2003. Summary of changes for version 20030509. 11607 11608 116091) ACPI CA Core Subsystem: 11610 11611Changed the subsystem initialization sequence to hold off 11612installation of address space handlers until the hardware has been 11613initialized and the system has entered ACPI mode. This is because 11614the installation of space handlers can cause _REG methods to be 11615run. Previously, the _REG methods could potentially be run before 11616ACPI mode was enabled. 11617 11618Fixed some memory leak issues related to address space handler and 11619notify handler installation. There were some problems with the 11620reference count mechanism caused by the fact that the handler 11621objects are shared across several namespace objects. 11622 11623Fixed a reported problem where reference counts within the 11624namespace were not properly updated when named objects created by 11625method execution were deleted. 11626 11627Fixed a reported problem where multiple SSDTs caused a deletion 11628issue during subsystem termination. Restructured the table data 11629structures to simplify the linked lists and the related code. 11630 11631Fixed a problem where the table ID associated with secondary 11632tables (SSDTs) was not being propagated into the namespace objects 11633created by those tables. This would only present a problem for 11634tables that are unloaded at run-time, however. 11635 11636Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 11637type as the length parameter (instead of UINT32). 11638 11639Solved a long-standing problem where an ALREADY_EXISTS error 11640appears on various systems. This problem could happen when there 11641are multiple PCI_Config operation regions under a single PCI root 11642bus. This doesn't happen very frequently, but there are some 11643systems that do this in the ASL. 11644 11645Fixed a reported problem where the internal DeleteNode function 11646was incorrectly handling the case where a namespace node was the 11647first in the parent's child list, and had additional peers (not 11648the only child, but first in the list of children.) 11649 11650Code and Data Size: Current core subsystem library sizes are shown 11651below. These are the code and data sizes for the acpica.lib 11652produced by the Microsoft Visual C++ 6.0 compiler, and these 11653values do not include any ACPI driver or OSPM code. The debug 11654version of the code includes the debug output trace mechanism and 11655has a much larger code and data size. Note that these values will 11656vary depending on the efficiency of the compiler and the compiler 11657options used during generation. 11658 11659 Previous Release 11660 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 11661 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 11662 Current Release: 11663 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11664 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11665 11666 116672) Linux: 11668 11669Allow ":" in OS override string (Ducrot Bruno) 11670 11671Kobject fix (Greg KH) 11672 11673 116743 iASL Compiler/Disassembler: 11675 11676Fixed a problem in the generation of the C source code files (AML 11677is emitted in C source statements for BIOS inclusion) where the 11678Ascii dump that appears within a C comment at the end of each line 11679could cause a compile time error if the AML sequence happens to 11680have an open comment or close comment sequence embedded. 11681 11682 11683---------------------------------------- 1168424 April 2003. Summary of changes for version 20030424. 11685 11686 116871) ACPI CA Core Subsystem: 11688 11689Support for big-endian systems has been implemented. Most of the 11690support has been invisibly added behind big-endian versions of the 11691ACPI_MOVE_* macros. 11692 11693Fixed a problem in AcpiHwDisableGpeBlock() and 11694AcpiHwClearGpeBlock() where an incorrect offset was passed to the 11695low level hardware write routine. The offset parameter was 11696actually eliminated from the low level read/write routines because 11697they had become obsolete. 11698 11699Fixed a problem where a handler object was deleted twice during 11700the removal of a fixed event handler. 11701 11702 117032) Linux: 11704 11705A fix for SMP systems with link devices was contributed by 11706 11707Compaq's Dan Zink. 11708 11709(2.5) Return whether we handled the interrupt in our IRQ handler. 11710(Linux ISRs no longer return void, so we can propagate the handler 11711return value from the ACPI CA core back to the OS.) 11712 11713 11714 117153) Documentation: 11716 11717The ACPI CA Programmer Reference has been updated to reflect new 11718interfaces and changes to existing interfaces. 11719 11720---------------------------------------- 1172128 March 2003. Summary of changes for version 20030328. 11722 117231) ACPI CA Core Subsystem: 11724 11725The GPE Block Device support has been completed. New interfaces 11726are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 11727interfaces (enable, disable, clear, getstatus) have been split 11728into separate interfaces for Fixed Events and General Purpose 11729Events (GPEs) in order to support GPE Block Devices properly. 11730 11731Fixed a problem where the error message "Failed to acquire 11732semaphore" would appear during operations on the embedded 11733controller (EC). 11734 11735Code and Data Size: Current core subsystem library sizes are shown 11736below. These are the code and data sizes for the acpica.lib 11737produced by the Microsoft Visual C++ 6.0 compiler, and these 11738values do not include any ACPI driver or OSPM code. The debug 11739version of the code includes the debug output trace mechanism and 11740has a much larger code and data size. Note that these values will 11741vary depending on the efficiency of the compiler and the compiler 11742options used during generation. 11743 11744 Previous Release 11745 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 11746 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 11747 Current Release: 11748 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 11749 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 11750 11751 11752---------------------------------------- 1175328 February 2003. Summary of changes for version 20030228. 11754 11755 117561) ACPI CA Core Subsystem: 11757 11758The GPE handling and dispatch code has been completely overhauled 11759in preparation for support of GPE Block Devices (ID ACPI0006). 11760This affects internal data structures and code only; there should 11761be no differences visible externally. One new file has been 11762added, evgpeblk.c 11763 11764The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 11765fields that are used to determine the GPE block lengths. The 11766REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 11767structures are ignored. This is per the ACPI specification but it 11768isn't very clear. The full 256 Block 0/1 GPEs are now supported 11769(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 11770 11771In the SCI interrupt handler, removed the read of the PM1_CONTROL 11772register to look at the SCI_EN bit. On some machines, this read 11773causes an SMI event and greatly slows down SCI events. (This may 11774in fact be the cause of slow battery status response on some 11775systems.) 11776 11777Fixed a problem where a store of a NULL string to a package object 11778could cause the premature deletion of the object. This was seen 11779during execution of the battery _BIF method on some systems, 11780resulting in no battery data being returned. 11781 11782Added AcpiWalkResources interface to simplify parsing of resource 11783lists. 11784 11785Code and Data Size: Current core subsystem library sizes are shown 11786below. These are the code and data sizes for the acpica.lib 11787produced by the Microsoft Visual C++ 6.0 compiler, and these 11788values do not include any ACPI driver or OSPM code. The debug 11789version of the code includes the debug output trace mechanism and 11790has a much larger code and data size. Note that these values will 11791vary depending on the efficiency of the compiler and the compiler 11792options used during generation. 11793 11794 Previous Release 11795 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 11796 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 11797 Current Release: 11798 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 11799 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 11800 11801 118022) Linux 11803 11804S3 fixes (Ole Rohne) 11805 11806Update ACPI PHP driver with to use new acpi_walk_resource API 11807(Bjorn Helgaas) 11808 11809Add S4BIOS support (Pavel Machek) 11810 11811Map in entire table before performing checksum (John Stultz) 11812 11813Expand the mem= cmdline to allow the specification of reserved and 11814ACPI DATA blocks (Pavel Machek) 11815 11816Never use ACPI on VISWS 11817 11818Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 11819 11820Revert a change that allowed P_BLK lengths to be 4 or 5. This is 11821causing us to think that some systems support C2 when they really 11822don't. 11823 11824Do not count processor objects for non-present CPUs (Thanks to 11825Dominik Brodowski) 11826 11827 118283) iASL Compiler: 11829 11830Fixed a problem where ASL include files could not be found and 11831opened. 11832 11833Added support for the _PDC reserved name. 11834 11835 11836---------------------------------------- 1183722 January 2003. Summary of changes for version 20030122. 11838 11839 118401) ACPI CA Core Subsystem: 11841 11842Added a check for constructs of the form: Store (Local0, Local0) 11843where Local0 is not initialized. Apparently, some BIOS 11844programmers believe that this is a NOOP. Since this store doesn't 11845do anything anyway, the new prototype behavior will ignore this 11846error. This is a case where we can relax the strict checking in 11847the interpreter in the name of compatibility. 11848 11849 118502) Linux 11851 11852The AcpiSrc Source Conversion Utility has been released with the 11853Linux package for the first time. This is the utility that is 11854used to convert the ACPI CA base source code to the Linux version. 11855 11856(Both) Handle P_BLK lengths shorter than 6 more gracefully 11857 11858(Both) Move more headers to include/acpi, and delete an unused 11859header. 11860 11861(Both) Move drivers/acpi/include directory to include/acpi 11862 11863(Both) Boot functions don't use cmdline, so don't pass it around 11864 11865(Both) Remove include of unused header (Adrian Bunk) 11866 11867(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 11868the 11869former now also includes the latter, acpiphp.h only needs the one, 11870now. 11871 11872(2.5) Make it possible to select method of bios restoring after S3 11873resume. [=> no more ugly ifdefs] (Pavel Machek) 11874 11875(2.5) Make proc write interfaces work (Pavel Machek) 11876 11877(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 11878 11879(2.5) Break out ACPI Perf code into its own module, under cpufreq 11880(Dominik Brodowski) 11881 11882(2.4) S4BIOS support (Ducrot Bruno) 11883 11884(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 11885Visinoni) 11886 11887 118883) iASL Compiler: 11889 11890Added support to disassemble SSDT and PSDTs. 11891 11892Implemented support to obtain SSDTs from the Windows registry if 11893available. 11894 11895 11896---------------------------------------- 1189709 January 2003. Summary of changes for version 20030109. 11898 118991) ACPI CA Core Subsystem: 11900 11901Changed the behavior of the internal Buffer-to-String conversion 11902function. The current ACPI specification states that the contents 11903of the buffer are "converted to a string of two-character 11904hexadecimal numbers, each separated by a space". Unfortunately, 11905this definition is not backwards compatible with existing ACPI 1.0 11906implementations (although the behavior was not defined in the ACPI 119071.0 specification). The new behavior simply copies data from the 11908buffer to the string until a null character is found or the end of 11909the buffer is reached. The new String object is always null 11910terminated. This problem was seen during the generation of _BIF 11911battery data where incorrect strings were returned for battery 11912type, etc. This will also require an errata to the ACPI 11913specification. 11914 11915Renamed all instances of NATIVE_UINT and NATIVE_INT to 11916ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 11917 11918Copyright in all module headers (both Linux and non-Linux) has be 11919updated to 2003. 11920 11921Code and Data Size: Current core subsystem library sizes are shown 11922below. These are the code and data sizes for the acpica.lib 11923produced by the Microsoft Visual C++ 6.0 compiler, and these 11924values do not include any ACPI driver or OSPM code. The debug 11925version of the code includes the debug output trace mechanism and 11926has a much larger code and data size. Note that these values will 11927vary depending on the efficiency of the compiler and the compiler 11928options used during generation. 11929 11930 Previous Release 11931 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 11932 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 11933 Current Release: 11934 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 11935 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 11936 11937 119382) Linux 11939 11940Fixed an oops on module insertion/removal (Matthew Tippett) 11941 11942(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 11943 11944(2.5) Replace pr_debug (Randy Dunlap) 11945 11946(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 11947 11948(Both) Eliminate spawning of thread from timer callback, in favor 11949of schedule_work() 11950 11951(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 11952 11953(Both) Added define for Fixed Function HW region (Matthew Wilcox) 11954 11955(Both) Add missing statics to button.c (Pavel Machek) 11956 11957Several changes have been made to the source code translation 11958utility that generates the Linux Code in order to make the code 11959more "Linux-like": 11960 11961All typedefs on structs and unions have been removed in keeping 11962with the Linux coding style. 11963 11964Removed the non-Linux SourceSafe module revision number from each 11965module header. 11966 11967Completed major overhaul of symbols to be lowercased for linux. 11968Doubled the number of symbols that are lowercased. 11969 11970Fixed a problem where identifiers within procedure headers and 11971within quotes were not fully lower cased (they were left with a 11972starting capital.) 11973 11974Some C macros whose only purpose is to allow the generation of 16- 11975bit code are now completely removed in the Linux code, increasing 11976readability and maintainability. 11977 11978---------------------------------------- 11979 1198012 December 2002. Summary of changes for version 20021212. 11981 11982 119831) ACPI CA Core Subsystem: 11984 11985Fixed a problem where the creation of a zero-length AML Buffer 11986would cause a fault. 11987 11988Fixed a problem where a Buffer object that pointed to a static AML 11989buffer (in an ACPI table) could inadvertently be deleted, causing 11990memory corruption. 11991 11992Fixed a problem where a user buffer (passed in to the external 11993ACPI CA interfaces) could be overwritten if the buffer was too 11994small to complete the operation, causing memory corruption. 11995 11996Fixed a problem in the Buffer-to-String conversion code where a 11997string of length one was always returned, regardless of the size 11998of the input Buffer object. 11999 12000Removed the NATIVE_CHAR data type across the entire source due to 12001lack of need and lack of consistent use. 12002 12003Code and Data Size: Current core subsystem library sizes are shown 12004below. These are the code and data sizes for the acpica.lib 12005produced by the Microsoft Visual C++ 6.0 compiler, and these 12006values do not include any ACPI driver or OSPM code. The debug 12007version of the code includes the debug output trace mechanism and 12008has a much larger code and data size. Note that these values will 12009vary depending on the efficiency of the compiler and the compiler 12010options used during generation. 12011 12012 Previous Release 12013 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12014 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12015 Current Release: 12016 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12017 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12018 12019 12020---------------------------------------- 1202105 December 2002. Summary of changes for version 20021205. 12022 120231) ACPI CA Core Subsystem: 12024 12025Fixed a problem where a store to a String or Buffer object could 12026cause corruption of the DSDT if the object type being stored was 12027the same as the target object type and the length of the object 12028being stored was equal to or smaller than the original (existing) 12029target object. This was seen to cause corruption of battery _BIF 12030buffers if the _BIF method modified the buffer on the fly. 12031 12032Fixed a problem where an internal error was generated if a control 12033method invocation was used in an OperationRegion, Buffer, or 12034Package declaration. This was caused by the deferred parsing of 12035the control method and thus the deferred creation of the internal 12036method object. The solution to this problem was to create the 12037internal method object at the moment the method is encountered in 12038the first pass - so that subsequent references to the method will 12039able to obtain the required parameter count and thus properly 12040parse the method invocation. This problem presented itself as an 12041AE_AML_INTERNAL during the pass 1 parse phase during table load. 12042 12043Fixed a problem where the internal String object copy routine did 12044not always allocate sufficient memory for the target String object 12045and caused memory corruption. This problem was seen to cause 12046"Allocation already present in list!" errors as memory allocation 12047became corrupted. 12048 12049Implemented a new function for the evaluation of namespace objects 12050that allows the specification of the allowable return object 12051types. This simplifies a lot of code that checks for a return 12052object of one or more specific objects returned from the 12053evaluation (such as _STA, etc.) This may become and external 12054function if it would be useful to ACPI-related drivers. 12055 12056Completed another round of prefixing #defines with "ACPI_" for 12057clarity. 12058 12059Completed additional code restructuring to allow more modular 12060linking for iASL compiler and AcpiExec. Several files were split 12061creating new files. New files: nsparse.c dsinit.c evgpe.c 12062 12063Implemented an abort mechanism to terminate an executing control 12064method via the AML debugger. This feature is useful for debugging 12065control methods that depend (wait) for specific hardware 12066responses. 12067 12068Code and Data Size: Current core subsystem library sizes are shown 12069below. These are the code and data sizes for the acpica.lib 12070produced by the Microsoft Visual C++ 6.0 compiler, and these 12071values do not include any ACPI driver or OSPM code. The debug 12072version of the code includes the debug output trace mechanism and 12073has a much larger code and data size. Note that these values will 12074vary depending on the efficiency of the compiler and the compiler 12075options used during generation. 12076 12077 Previous Release 12078 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12079 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12080 Current Release: 12081 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12082 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12083 12084 120852) iASL Compiler/Disassembler 12086 12087Fixed a compiler code generation problem for "Interrupt" Resource 12088Descriptors. If specified in the ASL, the optional "Resource 12089Source Index" and "Resource Source" fields were not inserted into 12090the correct location within the AML resource descriptor, creating 12091an invalid descriptor. 12092 12093Fixed a disassembler problem for "Interrupt" resource descriptors. 12094The optional "Resource Source Index" and "Resource Source" fields 12095were ignored. 12096 12097 12098---------------------------------------- 1209922 November 2002. Summary of changes for version 20021122. 12100 12101 121021) ACPI CA Core Subsystem: 12103 12104Fixed a reported problem where an object stored to a Method Local 12105or Arg was not copied to a new object during the store - the 12106object pointer was simply copied to the Local/Arg. This caused 12107all subsequent operations on the Local/Arg to also affect the 12108original source of the store operation. 12109 12110Fixed a problem where a store operation to a Method Local or Arg 12111was not completed properly if the Local/Arg contained a reference 12112(from RefOf) to a named field. The general-purpose store-to- 12113namespace-node code is now used so that this case is handled 12114automatically. 12115 12116Fixed a problem where the internal object copy routine would cause 12117a protection fault if the object being copied was a Package and 12118contained either 1) a NULL package element or 2) a nested sub- 12119package. 12120 12121Fixed a problem with the GPE initialization that resulted from an 12122ambiguity in the ACPI specification. One section of the 12123specification states that both the address and length of the GPE 12124block must be zero if the block is not supported. Another section 12125implies that only the address need be zero if the block is not 12126supported. The code has been changed so that both the address and 12127the length must be non-zero to indicate a valid GPE block (i.e., 12128if either the address or the length is zero, the GPE block is 12129invalid.) 12130 12131Code and Data Size: Current core subsystem library sizes are shown 12132below. These are the code and data sizes for the acpica.lib 12133produced by the Microsoft Visual C++ 6.0 compiler, and these 12134values do not include any ACPI driver or OSPM code. The debug 12135version of the code includes the debug output trace mechanism and 12136has a much larger code and data size. Note that these values will 12137vary depending on the efficiency of the compiler and the compiler 12138options used during generation. 12139 12140 Previous Release 12141 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12142 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12143 Current Release: 12144 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12145 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12146 12147 121482) Linux 12149 12150Cleaned up EC driver. Exported an external EC read/write 12151interface. By going through this, other drivers (most notably 12152sonypi) will be able to serialize access to the EC. 12153 12154 121553) iASL Compiler/Disassembler 12156 12157Implemented support to optionally generate include files for both 12158ASM and C (the -i switch). This simplifies BIOS development by 12159automatically creating include files that contain external 12160declarations for the symbols that are created within the 12161 12162(optionally generated) ASM and C AML source files. 12163 12164 12165---------------------------------------- 1216615 November 2002. Summary of changes for version 20021115. 12167 121681) ACPI CA Core Subsystem: 12169 12170Fixed a memory leak problem where an error during resolution of 12171 12172method arguments during a method invocation from another method 12173failed to cleanup properly by deleting all successfully resolved 12174argument objects. 12175 12176Fixed a problem where the target of the Index() operator was not 12177correctly constructed if the source object was a package. This 12178problem has not been detected because the use of a target operand 12179with Index() is very rare. 12180 12181Fixed a problem with the Index() operator where an attempt was 12182made to delete the operand objects twice. 12183 12184Fixed a problem where an attempt was made to delete an operand 12185twice during execution of the CondRefOf() operator if the target 12186did not exist. 12187 12188Implemented the first of perhaps several internal create object 12189functions that create and initialize a specific object type. This 12190consolidates duplicated code wherever the object is created, thus 12191shrinking the size of the subsystem. 12192 12193Implemented improved debug/error messages for errors that occur 12194during nested method invocations. All executing method pathnames 12195are displayed (with the error) as the call stack is unwound - thus 12196simplifying debug. 12197 12198Fixed a problem introduced in the 10/02 release that caused 12199premature deletion of a buffer object if a buffer was used as an 12200ASL operand where an integer operand is required (Thus causing an 12201implicit object conversion from Buffer to Integer.) The change in 12202the 10/02 release was attempting to fix a memory leak (albeit 12203incorrectly.) 12204 12205Code and Data Size: Current core subsystem library sizes are shown 12206below. These are the code and data sizes for the acpica.lib 12207produced by the Microsoft Visual C++ 6.0 compiler, and these 12208values do not include any ACPI driver or OSPM code. The debug 12209version of the code includes the debug output trace mechanism and 12210has a much larger code and data size. Note that these values will 12211vary depending on the efficiency of the compiler and the compiler 12212options used during generation. 12213 12214 Previous Release 12215 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12216 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12217 Current Release: 12218 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12219 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12220 12221 122222) Linux 12223 12224Changed the implementation of the ACPI semaphores to use down() 12225instead of down_interruptable(). It is important that the 12226execution of ACPI control methods not be interrupted by signals. 12227Methods must run to completion, or the system may be left in an 12228unknown/unstable state. 12229 12230Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 12231(Shawn Starr) 12232 12233 122343) iASL Compiler/Disassembler 12235 12236 12237Changed the default location of output files. All output files 12238are now placed in the current directory by default instead of in 12239the directory of the source file. This change may affect some 12240existing makefiles, but it brings the behavior of the compiler in 12241line with other similar tools. The location of the output files 12242can be overridden with the -p command line switch. 12243 12244 12245---------------------------------------- 1224611 November 2002. Summary of changes for version 20021111. 12247 12248 122490) ACPI Specification 2.0B is released and is now available at: 12250http://www.acpi.info/index.html 12251 12252 122531) ACPI CA Core Subsystem: 12254 12255Implemented support for the ACPI 2.0 SMBus Operation Regions. 12256This includes the early detection and handoff of the request to 12257the SMBus region handler (avoiding all of the complex field 12258support code), and support for the bidirectional return packet 12259from an SMBus write operation. This paves the way for the 12260development of SMBus drivers in each host operating system. 12261 12262Fixed a problem where the semaphore WAIT_FOREVER constant was 12263defined as 32 bits, but must be 16 bits according to the ACPI 12264specification. This had the side effect of causing ASL 12265Mutex/Event timeouts even though the ASL code requested a wait 12266forever. Changed all internal references to the ACPI timeout 12267parameter to 16 bits to prevent future problems. Changed the name 12268of WAIT_FOREVER to ACPI_WAIT_FOREVER. 12269 12270Code and Data Size: Current core subsystem library sizes are shown 12271below. These are the code and data sizes for the acpica.lib 12272produced by the Microsoft Visual C++ 6.0 compiler, and these 12273values do not include any ACPI driver or OSPM code. The debug 12274version of the code includes the debug output trace mechanism and 12275has a much larger code and data size. Note that these values will 12276vary depending on the efficiency of the compiler and the compiler 12277options used during generation. 12278 12279 Previous Release 12280 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12281 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12282 Current Release: 12283 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 12284 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 12285 12286 122872) Linux 12288 12289Module loading/unloading fixes (John Cagle) 12290 12291 122923) iASL Compiler/Disassembler 12293 12294Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 12295 12296Implemented support for the disassembly of all SMBus protocol 12297keywords (SMBQuick, SMBWord, etc.) 12298 12299---------------------------------------- 1230001 November 2002. Summary of changes for version 20021101. 12301 12302 123031) ACPI CA Core Subsystem: 12304 12305Fixed a problem where platforms that have a GPE1 block but no GPE0 12306block were not handled correctly. This resulted in a "GPE 12307overlap" error message. GPE0 is no longer required. 12308 12309Removed code added in the previous release that inserted nodes 12310into the namespace in alphabetical order. This caused some side- 12311effects on various machines. The root cause of the problem is 12312still under investigation since in theory, the internal ordering 12313of the namespace nodes should not matter. 12314 12315 12316Enhanced error reporting for the case where a named object is not 12317found during control method execution. The full ACPI namepath 12318(name reference) of the object that was not found is displayed in 12319this case. 12320 12321Note: as a result of the overhaul of the namespace object types in 12322the previous release, the namespace nodes for the predefined 12323scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 12324instead of ACPI_TYPE_ANY. This simplifies the namespace 12325management code but may affect code that walks the namespace tree 12326looking for specific object types. 12327 12328Code and Data Size: Current core subsystem library sizes are shown 12329below. These are the code and data sizes for the acpica.lib 12330produced by the Microsoft Visual C++ 6.0 compiler, and these 12331values do not include any ACPI driver or OSPM code. The debug 12332version of the code includes the debug output trace mechanism and 12333has a much larger code and data size. Note that these values will 12334vary depending on the efficiency of the compiler and the compiler 12335options used during generation. 12336 12337 Previous Release 12338 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12339 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12340 Current Release: 12341 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12342 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12343 12344 123452) Linux 12346 12347Fixed a problem introduced in the previous release where the 12348Processor and Thermal objects were not recognized and installed in 12349/proc. This was related to the scope type change described above. 12350 12351 123523) iASL Compiler/Disassembler 12353 12354Implemented the -g option to get all of the required ACPI tables 12355from the registry and save them to files (Windows version of the 12356compiler only.) The required tables are the FADT, FACS, and DSDT. 12357 12358Added ACPI table checksum validation during table disassembly in 12359order to catch corrupted tables. 12360 12361 12362---------------------------------------- 1236322 October 2002. Summary of changes for version 20021022. 12364 123651) ACPI CA Core Subsystem: 12366 12367Implemented a restriction on the Scope operator that the target 12368must already exist in the namespace at the time the operator is 12369encountered (during table load or method execution). In other 12370words, forward references are not allowed and Scope() cannot 12371create a new object. This changes the previous behavior where the 12372interpreter would create the name if not found. This new behavior 12373correctly enables the search-to-root algorithm during namespace 12374lookup of the target name. Because of this upsearch, this fixes 12375the known Compaq _SB_.OKEC problem and makes both the AML 12376interpreter and iASL compiler compatible with other ACPI 12377implementations. 12378 12379Completed a major overhaul of the internal ACPI object types for 12380the ACPI Namespace and the associated operand objects. Many of 12381these types had become obsolete with the introduction of the two- 12382pass namespace load. This cleanup simplifies the code and makes 12383the entire namespace load mechanism much clearer and easier to 12384understand. 12385 12386Improved debug output for tracking scope opening/closing to help 12387diagnose scoping issues. The old scope name as well as the new 12388scope name are displayed. Also improved error messages for 12389problems with ASL Mutex objects and error messages for GPE 12390problems. 12391 12392Cleaned up the namespace dump code, removed obsolete code. 12393 12394All string output (for all namespace/object dumps) now uses the 12395common ACPI string output procedure which handles escapes properly 12396and does not emit non-printable characters. 12397 12398Fixed some issues with constants in the 64-bit version of the 12399local C library (utclib.c) 12400 12401 124022) Linux 12403 12404EC Driver: No longer attempts to acquire the Global Lock at 12405interrupt level. 12406 12407 124083) iASL Compiler/Disassembler 12409 12410Implemented ACPI 2.0B grammar change that disallows all Type 1 and 124112 opcodes outside of a control method. This means that the 12412"executable" operators (versus the "namespace" operators) cannot 12413be used at the table level; they can only be used within a control 12414method. 12415 12416Implemented the restriction on the Scope() operator where the 12417target must already exist in the namespace at the time the 12418operator is encountered (during ASL compilation). In other words, 12419forward references are not allowed and Scope() cannot create a new 12420object. This makes the iASL compiler compatible with other ACPI 12421implementations and makes the Scope() implementation adhere to the 12422ACPI specification. 12423 12424Fixed a problem where namepath optimization for the Alias operator 12425was optimizing the wrong path (of the two namepaths.) This caused 12426a "Missing alias link" error message. 12427 12428Fixed a problem where an "unknown reserved name" warning could be 12429incorrectly generated for names like "_SB" when the trailing 12430underscore is not used in the original ASL. 12431 12432Fixed a problem where the reserved name check did not handle 12433NamePaths with multiple NameSegs correctly. The first nameseg of 12434the NamePath was examined instead of the last NameSeg. 12435 12436 12437---------------------------------------- 12438 1243902 October 2002. Summary of changes for this release. 12440 12441 124421) ACPI CA Core Subsystem version 20021002: 12443 12444Fixed a problem where a store/copy of a string to an existing 12445string did not always set the string length properly in the String 12446object. 12447 12448Fixed a reported problem with the ToString operator where the 12449behavior was identical to the ToHexString operator instead of just 12450simply converting a raw buffer to a string data type. 12451 12452Fixed a problem where CopyObject and the other "explicit" 12453conversion operators were not updating the internal namespace node 12454type as part of the store operation. 12455 12456Fixed a memory leak during implicit source operand conversion 12457where the original object was not deleted if it was converted to a 12458new object of a different type. 12459 12460Enhanced error messages for all problems associated with namespace 12461lookups. Common procedure generates and prints the lookup name as 12462well as the formatted status. 12463 12464Completed implementation of a new design for the Alias support 12465within the namespace. The existing design did not handle the case 12466where a new object was assigned to one of the two names due to the 12467use of an explicit conversion operator, resulting in the two names 12468pointing to two different objects. The new design simply points 12469the Alias name to the original name node - not to the object. 12470This results in a level of indirection that must be handled in the 12471name resolution mechanism. 12472 12473Code and Data Size: Current core subsystem library sizes are shown 12474below. These are the code and data sizes for the acpica.lib 12475produced by the Microsoft Visual C++ 6.0 compiler, and these 12476values do not include any ACPI driver or OSPM code. The debug 12477version of the code includes the debug output trace mechanism and 12478has a larger code and data size. Note that these values will vary 12479depending on the efficiency of the compiler and the compiler 12480options used during generation. 12481 12482 Previous Release 12483 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12484 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12485 Current Release: 12486 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12487 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12488 12489 124902) Linux 12491 12492Initialize thermal driver's timer before it is used. (Knut 12493Neumann) 12494 12495Allow handling negative celsius values. (Kochi Takayoshi) 12496 12497Fix thermal management and make trip points. R/W (Pavel Machek) 12498 12499Fix /proc/acpi/sleep. (P. Christeas) 12500 12501IA64 fixes. (David Mosberger) 12502 12503Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 12504 12505Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 12506Brodowski) 12507 12508 125093) iASL Compiler/Disassembler 12510 12511Clarified some warning/error messages. 12512 12513 12514---------------------------------------- 1251518 September 2002. Summary of changes for this release. 12516 12517 125181) ACPI CA Core Subsystem version 20020918: 12519 12520Fixed a reported problem with reference chaining (via the Index() 12521and RefOf() operators) in the ObjectType() and SizeOf() operators. 12522The definition of these operators includes the dereferencing of 12523all chained references to return information on the base object. 12524 12525Fixed a problem with stores to indexed package elements - the 12526existing code would not complete the store if an "implicit 12527conversion" was not performed. In other words, if the existing 12528object (package element) was to be replaced completely, the code 12529didn't handle this case. 12530 12531Relaxed typechecking on the ASL "Scope" operator to allow the 12532target name to refer to an object of type Integer, String, or 12533Buffer, in addition to the scoping object types (Device, 12534predefined Scopes, Processor, PowerResource, and ThermalZone.) 12535This allows existing AML code that has workarounds for a bug in 12536Windows to function properly. A warning is issued, however. This 12537affects both the AML interpreter and the iASL compiler. Below is 12538an example of this type of ASL code: 12539 12540 Name(DEB,0x00) 12541 Scope(DEB) 12542 { 12543 12544Fixed some reported problems with 64-bit integer support in the 12545local implementation of C library functions (clib.c) 12546 12547 125482) Linux 12549 12550Use ACPI fix map region instead of IOAPIC region, since it is 12551undefined in non-SMP. 12552 12553Ensure that the SCI has the proper polarity and trigger, even on 12554systems that do not have an interrupt override entry in the MADT. 12555 125562.5 big driver reorganization (Pat Mochel) 12557 12558Use early table mapping code from acpitable.c (Andi Kleen) 12559 12560New blacklist entries (Andi Kleen) 12561 12562Blacklist improvements. Split blacklist code out into a separate 12563file. Move checking the blacklist to very early. Previously, we 12564would use ACPI tables, and then halfway through init, check the 12565blacklist -- too late. Now, it's early enough to completely fall- 12566back to non-ACPI. 12567 12568 125693) iASL Compiler/Disassembler version 20020918: 12570 12571Fixed a problem where the typechecking code didn't know that an 12572alias could point to a method. In other words, aliases were not 12573being dereferenced during typechecking. 12574 12575 12576---------------------------------------- 1257729 August 2002. Summary of changes for this release. 12578 125791) ACPI CA Core Subsystem Version 20020829: 12580 12581If the target of a Scope() operator already exists, it must be an 12582object type that actually opens a scope -- such as a Device, 12583Method, Scope, etc. This is a fatal runtime error. Similar error 12584check has been added to the iASL compiler also. 12585 12586Tightened up the namespace load to disallow multiple names in the 12587same scope. This previously was allowed if both objects were of 12588the same type. (i.e., a lookup was the same as entering a new 12589name). 12590 12591 125922) Linux 12593 12594Ensure that the ACPI interrupt has the proper trigger and 12595polarity. 12596 12597local_irq_disable is extraneous. (Matthew Wilcox) 12598 12599Make "acpi=off" actually do what it says, and not use the ACPI 12600interpreter *or* the tables. 12601 12602Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 12603Takayoshi) 12604 12605 126063) iASL Compiler/Disassembler Version 20020829: 12607 12608Implemented namepath optimization for name declarations. For 12609example, a declaration like "Method (\_SB_.ABCD)" would get 12610optimized to "Method (ABCD)" if the declaration is within the 12611\_SB_ scope. This optimization is in addition to the named 12612reference path optimization first released in the previous 12613version. This would seem to complete all possible optimizations 12614for namepaths within the ASL/AML. 12615 12616If the target of a Scope() operator already exists, it must be an 12617object type that actually opens a scope -- such as a Device, 12618Method, Scope, etc. 12619 12620Implemented a check and warning for unreachable code in the same 12621block below a Return() statement. 12622 12623Fixed a problem where the listing file was not generated if the 12624compiler aborted if the maximum error count was exceeded (200). 12625 12626Fixed a problem where the typechecking of method return values was 12627broken. This includes the check for a return value when the 12628method is invoked as a TermArg (a return value is expected.) 12629 12630Fixed a reported problem where EOF conditions during a quoted 12631string or comment caused a fault. 12632 12633 12634---------------------------------------- 1263515 August 2002. Summary of changes for this release. 12636 126371) ACPI CA Core Subsystem Version 20020815: 12638 12639Fixed a reported problem where a Store to a method argument that 12640contains a reference did not perform the indirect store correctly. 12641This problem was created during the conversion to the new 12642reference object model - the indirect store to a method argument 12643code was not updated to reflect the new model. 12644 12645Reworked the ACPI mode change code to better conform to ACPI 2.0, 12646handle corner cases, and improve code legibility (Kochi Takayoshi) 12647 12648Fixed a problem with the pathname parsing for the carat (^) 12649prefix. The heavy use of the carat operator by the new namepath 12650optimization in the iASL compiler uncovered a problem with the AML 12651interpreter handling of this prefix. In the case where one or 12652more carats precede a single nameseg, the nameseg was treated as 12653standalone and the search rule (to root) was inadvertently 12654applied. This could cause both the iASL compiler and the 12655interpreter to find the wrong object or to miss the error that 12656should occur if the object does not exist at that exact pathname. 12657 12658Found and fixed the problem where the HP Pavilion DSDT would not 12659load. This was a relatively minor tweak to the table loading code 12660(a problem caused by the unexpected encounter with a method 12661invocation not within a control method), but it does not solve the 12662overall issue of the execution of AML code at the table level. 12663This investigation is still ongoing. 12664 12665Code and Data Size: Current core subsystem library sizes are shown 12666below. These are the code and data sizes for the acpica.lib 12667produced by the Microsoft Visual C++ 6.0 compiler, and these 12668values do not include any ACPI driver or OSPM code. The debug 12669version of the code includes the debug output trace mechanism and 12670has a larger code and data size. Note that these values will vary 12671depending on the efficiency of the compiler and the compiler 12672options used during generation. 12673 12674 Previous Release 12675 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 12676 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 12677 Current Release: 12678 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12679 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12680 12681 126822) Linux 12683 12684Remove redundant slab.h include (Brad Hards) 12685 12686Fix several bugs in thermal.c (Herbert Nachtnebel) 12687 12688Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 12689 12690Change acpi_system_suspend to use updated irq functions (Pavel 12691Machek) 12692 12693Export acpi_get_firmware_table (Matthew Wilcox) 12694 12695Use proper root proc entry for ACPI (Kochi Takayoshi) 12696 12697Fix early-boot table parsing (Bjorn Helgaas) 12698 12699 127003) iASL Compiler/Disassembler 12701 12702Reworked the compiler options to make them more consistent and to 12703use two-letter options where appropriate. We were running out of 12704sensible letters. This may break some makefiles, so check the 12705current options list by invoking the compiler with no parameters. 12706 12707Completed the design and implementation of the ASL namepath 12708optimization option for the compiler. This option optimizes all 12709references to named objects to the shortest possible path. The 12710first attempt tries to utilize a single nameseg (4 characters) and 12711the "search-to-root" algorithm used by the interpreter. If that 12712cannot be used (because either the name is not in the search path 12713or there is a conflict with another object with the same name), 12714the pathname is optimized using the carat prefix (usually a 12715shorter string than specifying the entire path from the root.) 12716 12717Implemented support to obtain the DSDT from the Windows registry 12718(when the disassembly option is specified with no input file). 12719Added this code as the implementation for AcpiOsTableOverride in 12720the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 12721utility) to scan memory for the DSDT to the AcpiOsTableOverride 12722function in the DOS OSL to make the disassembler truly OS 12723independent. 12724 12725Implemented a new option to disassemble and compile in one step. 12726When used without an input filename, this option will grab the 12727DSDT from the local machine, disassemble it, and compile it in one 12728step. 12729 12730Added a warning message for invalid escapes (a backslash followed 12731by any character other than the allowable escapes). This catches 12732the quoted string error "\_SB_" (which should be "\\_SB_" ). 12733 12734Also, there are numerous instances in the ACPI specification where 12735this error occurs. 12736 12737Added a compiler option to disable all optimizations. This is 12738basically the "compatibility mode" because by using this option, 12739the AML code will come out exactly the same as other ASL 12740compilers. 12741 12742Added error messages for incorrectly ordered dependent resource 12743functions. This includes: missing EndDependentFn macro at end of 12744dependent resource list, nested dependent function macros (both 12745start and end), and missing StartDependentFn macro. These are 12746common errors that should be caught at compile time. 12747 12748Implemented _OSI support for the disassembler and compiler. _OSI 12749must be included in the namespace for proper disassembly (because 12750the disassembler must know the number of arguments.) 12751 12752Added an "optimization" message type that is optional (off by 12753default). This message is used for all optimizations - including 12754constant folding, integer optimization, and namepath optimization. 12755 12756---------------------------------------- 1275725 July 2002. Summary of changes for this release. 12758 12759 127601) ACPI CA Core Subsystem Version 20020725: 12761 12762The AML Disassembler has been enhanced to produce compilable ASL 12763code and has been integrated into the iASL compiler (see below) as 12764well as the single-step disassembly for the AML debugger and the 12765disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 12766resource templates and macros are fully supported. The 12767disassembler has been tested on over 30 different AML files, 12768producing identical AML when the resulting disassembled ASL file 12769is recompiled with the same ASL compiler. 12770 12771Modified the Resource Manager to allow zero interrupts and zero 12772dma channels during the GetCurrentResources call. This was 12773causing problems on some platforms. 12774 12775Added the AcpiOsRedirectOutput interface to the OSL to simplify 12776output redirection for the AcpiOsPrintf and AcpiOsVprintf 12777interfaces. 12778 12779Code and Data Size: Current core subsystem library sizes are shown 12780below. These are the code and data sizes for the acpica.lib 12781produced by the Microsoft Visual C++ 6.0 compiler, and these 12782values do not include any ACPI driver or OSPM code. The debug 12783version of the code includes the debug output trace mechanism and 12784has a larger code and data size. Note that these values will vary 12785depending on the efficiency of the compiler and the compiler 12786options used during generation. 12787 12788 Previous Release 12789 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 12790 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 12791 Current Release: 12792 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 12793 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 12794 12795 127962) Linux 12797 12798Fixed a panic in the EC driver (Dominik Brodowski) 12799 12800Implemented checksum of the R/XSDT itself during Linux table scan 12801(Richard Schaal) 12802 12803 128043) iASL compiler 12805 12806The AML disassembler is integrated into the compiler. The "-d" 12807option invokes the disassembler to completely disassemble an 12808input AML file, producing as output a text ASL file with the 12809extension ".dsl" (to avoid name collisions with existing .asl 12810source files.) A future enhancement will allow the disassembler 12811to obtain the BIOS DSDT from the registry under Windows. 12812 12813Fixed a problem with the VendorShort and VendorLong resource 12814descriptors where an invalid AML sequence was created. 12815 12816Implemented a fix for BufferData term in the ASL parser. It was 12817inadvertently defined twice, allowing invalid syntax to pass and 12818causing reduction conflicts. 12819 12820Fixed a problem where the Ones opcode could get converted to a 12821value of zero if "Ones" was used where a byte, word or dword value 12822was expected. The 64-bit value is now truncated to the correct 12823size with the correct value. 12824 12825 12826 12827---------------------------------------- 1282802 July 2002. Summary of changes for this release. 12829 12830 128311) ACPI CA Core Subsystem Version 20020702: 12832 12833The Table Manager code has been restructured to add several new 12834features. Tables that are not required by the core subsystem 12835(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 12836validated in any way and are returned from AcpiGetFirmwareTable if 12837requested. The AcpiOsTableOverride interface is now called for 12838each table that is loaded by the subsystem in order to allow the 12839host to override any table it chooses. Previously, only the DSDT 12840could be overridden. Added one new files, tbrsdt.c and 12841tbgetall.c. 12842 12843Fixed a problem with the conversion of internal package objects to 12844external objects (when a package is returned from a control 12845method.) The return buffer length was set to zero instead of the 12846proper length of the package object. 12847 12848Fixed a reported problem with the use of the RefOf and DeRefOf 12849operators when passing reference arguments to control methods. A 12850new type of Reference object is used internally for references 12851produced by the RefOf operator. 12852 12853Added additional error messages in the Resource Manager to explain 12854AE_BAD_DATA errors when they occur during resource parsing. 12855 12856Split the AcpiEnableSubsystem into two primitives to enable a 12857finer granularity initialization sequence. These two calls should 12858be called in this order: AcpiEnableSubsystem (flags), 12859AcpiInitializeObjects (flags). The flags parameter remains the 12860same. 12861 12862 128632) Linux 12864 12865Updated the ACPI utilities module to understand the new style of 12866fully resolved package objects that are now returned from the core 12867subsystem. This eliminates errors of the form: 12868 12869 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 12870 acpi_utils-0430 [145] acpi_evaluate_reference: 12871 Invalid element in package (not a device reference) 12872 12873The method evaluation utility uses the new buffer allocation 12874scheme instead of calling AcpiEvaluate Object twice. 12875 12876Added support for ECDT. This allows the use of the Embedded 12877 12878Controller before the namespace has been fully initialized, which 12879is necessary for ACPI 2.0 support, and for some laptops to 12880initialize properly. (Laptops using ECDT are still rare, so only 12881limited testing was performed of the added functionality.) 12882 12883Fixed memory leaks in the EC driver. 12884 12885Eliminated a brittle code structure in acpi_bus_init(). 12886 12887Eliminated the acpi_evaluate() helper function in utils.c. It is 12888no longer needed since acpi_evaluate_object can optionally 12889allocate memory for the return object. 12890 12891Implemented fix for keyboard hang when getting battery readings on 12892some systems (Stephen White) 12893 12894PCI IRQ routing update (Dominik Brodowski) 12895 12896Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 12897support 12898 12899---------------------------------------- 1290011 June 2002. Summary of changes for this release. 12901 12902 129031) ACPI CA Core Subsystem Version 20020611: 12904 12905Fixed a reported problem where constants such as Zero and One 12906appearing within _PRT packages were not handled correctly within 12907the resource manager code. Originally reported against the ASL 12908compiler because the code generator now optimizes integers to 12909their minimal AML representation (i.e. AML constants if possible.) 12910The _PRT code now handles all AML constant opcodes correctly 12911(Zero, One, Ones, Revision). 12912 12913Fixed a problem with the Concatenate operator in the AML 12914interpreter where a buffer result object was incorrectly marked as 12915not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 12916 12917All package sub-objects are now fully resolved before they are 12918returned from the external ACPI interfaces. This means that name 12919strings are resolved to object handles, and constant operators 12920(Zero, One, Ones, Revision) are resolved to Integers. 12921 12922Implemented immediate resolution of the AML Constant opcodes 12923(Zero, One, Ones, Revision) to Integer objects upon detection 12924within the AML stream. This has simplified and reduced the 12925generated code size of the subsystem by eliminating about 10 12926switch statements for these constants (which previously were 12927contained in Reference objects.) The complicating issues are that 12928the Zero opcode is used as a "placeholder" for unspecified 12929optional target operands and stores to constants are defined to be 12930no-ops. 12931 12932Code and Data Size: Current core subsystem library sizes are shown 12933below. These are the code and data sizes for the acpica.lib 12934produced by the Microsoft Visual C++ 6.0 compiler, and these 12935values do not include any ACPI driver or OSPM code. The debug 12936version of the code includes the debug output trace mechanism and 12937has a larger code and data size. Note that these values will vary 12938depending on the efficiency of the compiler and the compiler 12939options used during generation. 12940 12941 Previous Release 12942 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 12943 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 12944 Current Release: 12945 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 12946 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 12947 12948 129492) Linux 12950 12951 12952Added preliminary support for obtaining _TRA data for PCI root 12953bridges (Bjorn Helgaas). 12954 12955 129563) iASL Compiler Version X2046: 12957 12958Fixed a problem where the "_DDN" reserved name was defined to be a 12959control method with one argument. There are no arguments, and 12960_DDN does not have to be a control method. 12961 12962Fixed a problem with the Linux version of the compiler where the 12963source lines printed with error messages were the wrong lines. 12964This turned out to be the "LF versus CR/LF" difference between 12965Windows and Unix. This appears to be the longstanding issue 12966concerning listing output and error messages. 12967 12968Fixed a problem with the Linux version of compiler where opcode 12969names within error messages were wrong. This was caused by a 12970slight difference in the output of the Flex tool on Linux versus 12971Windows. 12972 12973Fixed a problem with the Linux compiler where the hex output files 12974contained some garbage data caused by an internal buffer overrun. 12975 12976 12977---------------------------------------- 1297817 May 2002. Summary of changes for this release. 12979 12980 129811) ACPI CA Core Subsystem Version 20020517: 12982 12983Implemented a workaround to an BIOS bug discovered on the HP 12984OmniBook where the FADT revision number and the table size are 12985inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 12986behavior is to fallback to using only the ACPI 1.0 fields of the 12987FADT if the table is too small to be a ACPI 2.0 table as claimed 12988by the revision number. Although this is a BIOS bug, this is a 12989case where the workaround is simple enough and with no side 12990effects, so it seemed prudent to add it. A warning message is 12991issued, however. 12992 12993Implemented minimum size checks for the fixed-length ACPI tables - 12994- the FADT and FACS, as well as consistency checks between the 12995revision number and the table size. 12996 12997Fixed a reported problem in the table override support where the 12998new table pointer was incorrectly treated as a physical address 12999instead of a logical address. 13000 13001Eliminated the use of the AE_AML_ERROR exception and replaced it 13002with more descriptive codes. 13003 13004Fixed a problem where an exception would occur if an ASL Field was 13005defined with no named Field Units underneath it (used by some 13006index fields). 13007 13008Code and Data Size: Current core subsystem library sizes are shown 13009below. These are the code and data sizes for the acpica.lib 13010produced by the Microsoft Visual C++ 6.0 compiler, and these 13011values do not include any ACPI driver or OSPM code. The debug 13012version of the code includes the debug output trace mechanism and 13013has a larger code and data size. Note that these values will vary 13014depending on the efficiency of the compiler and the compiler 13015options used during generation. 13016 13017 Previous Release 13018 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13019 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13020 Current Release: 13021 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13022 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13023 13024 13025 130262) Linux 13027 13028Much work done on ACPI init (MADT and PCI IRQ routing support). 13029(Paul D. and Dominik Brodowski) 13030 13031Fix PCI IRQ-related panic on boot (Sam Revitch) 13032 13033Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 13034 13035Fix "MHz" typo (Dominik Brodowski) 13036 13037Fix RTC year 2000 issue (Dominik Brodowski) 13038 13039Preclude multiple button proc entries (Eric Brunet) 13040 13041Moved arch-specific code out of include/platform/aclinux.h 13042 130433) iASL Compiler Version X2044: 13044 13045Implemented error checking for the string used in the EISAID macro 13046(Usually used in the definition of the _HID object.) The code now 13047strictly enforces the PnP format - exactly 7 characters, 3 13048uppercase letters and 4 hex digits. 13049 13050If a raw string is used in the definition of the _HID object 13051(instead of the EISAID macro), the string must contain all 13052alphanumeric characters (e.g., "*PNP0011" is not allowed because 13053of the asterisk.) 13054 13055Implemented checking for invalid use of ACPI reserved names for 13056most of the name creation operators (Name, Device, Event, Mutex, 13057OperationRegion, PowerResource, Processor, and ThermalZone.) 13058Previously, this check was only performed for control methods. 13059 13060Implemented an additional check on the Name operator to emit an 13061error if a reserved name that must be implemented in ASL as a 13062control method is used. We know that a reserved name must be a 13063method if it is defined with input arguments. 13064 13065The warning emitted when a namespace object reference is not found 13066during the cross reference phase has been changed into an error. 13067The "External" directive should be used for names defined in other 13068modules. 13069 13070 130714) Tools and Utilities 13072 13073The 16-bit tools (adump16 and aexec16) have been regenerated and 13074tested. 13075 13076Fixed a problem with the output of both acpidump and adump16 where 13077the indentation of closing parentheses and brackets was not 13078 13079aligned properly with the parent block. 13080 13081 13082---------------------------------------- 1308303 May 2002. Summary of changes for this release. 13084 13085 130861) ACPI CA Core Subsystem Version 20020503: 13087 13088Added support a new OSL interface that allows the host operating 13089 13090system software to override the DSDT found in the firmware - 13091AcpiOsTableOverride. With this interface, the OSL can examine the 13092version of the firmware DSDT and replace it with a different one 13093if desired. 13094 13095Added new external interfaces for accessing ACPI registers from 13096device drivers and other system software - AcpiGetRegister and 13097AcpiSetRegister. This was simply an externalization of the 13098existing AcpiHwBitRegister interfaces. 13099 13100Fixed a regression introduced in the previous build where the 13101ASL/AML CreateField operator always returned an error, 13102"destination must be a NS Node". 13103 13104Extended the maximum time (before failure) to successfully enable 13105ACPI mode to 3 seconds. 13106 13107Code and Data Size: Current core subsystem library sizes are shown 13108below. These are the code and data sizes for the acpica.lib 13109produced by the Microsoft Visual C++ 6.0 compiler, and these 13110values do not include any ACPI driver or OSPM code. The debug 13111version of the code includes the debug output trace mechanism and 13112has a larger code and data size. Note that these values will vary 13113depending on the efficiency of the compiler and the compiler 13114options used during generation. 13115 13116 Previous Release 13117 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13118 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13119 Current Release: 13120 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13121 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13122 13123 131242) Linux 13125 13126Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 13127free. While 3 out of 4 of our in-house systems work fine, the last 13128one still hangs when testing the LAPIC timer. 13129 13130Renamed many files in 2.5 kernel release to omit "acpi_" from the 13131name. 13132 13133Added warning on boot for Presario 711FR. 13134 13135Sleep improvements (Pavel Machek) 13136 13137ACPI can now be built without CONFIG_PCI enabled. 13138 13139IA64: Fixed memory map functions (JI Lee) 13140 13141 131423) iASL Compiler Version X2043: 13143 13144Added support to allow the compiler to be integrated into the MS 13145VC++ development environment for one-button compilation of single 13146files or entire projects -- with error-to-source-line mapping. 13147 13148Implemented support for compile-time constant folding for the 13149Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 13150specification. This allows the ASL writer to use expressions 13151instead of Integer/Buffer/String constants in terms that must 13152evaluate to constants at compile time and will also simplify the 13153emitted AML in any such sub-expressions that can be folded 13154(evaluated at compile-time.) This increases the size of the 13155compiler significantly because a portion of the ACPI CA AML 13156interpreter is included within the compiler in order to pre- 13157evaluate constant expressions. 13158 13159 13160Fixed a problem with the "Unicode" ASL macro that caused the 13161compiler to fault. (This macro is used in conjunction with the 13162_STR reserved name.) 13163 13164Implemented an AML opcode optimization to use the Zero, One, and 13165Ones opcodes where possible to further reduce the size of integer 13166constants and thus reduce the overall size of the generated AML 13167code. 13168 13169Implemented error checking for new reserved terms for ACPI version 131702.0A. 13171 13172Implemented the -qr option to display the current list of ACPI 13173reserved names known to the compiler. 13174 13175Implemented the -qc option to display the current list of ASL 13176operators that are allowed within constant expressions and can 13177therefore be folded at compile time if the operands are constants. 13178 13179 131804) Documentation 13181 13182Updated the Programmer's Reference for new interfaces, data types, 13183and memory allocation model options. 13184 13185Updated the iASL Compiler User Reference to apply new format and 13186add information about new features and options. 13187 13188---------------------------------------- 1318919 April 2002. Summary of changes for this release. 13190 131911) ACPI CA Core Subsystem Version 20020419: 13192 13193The source code base for the Core Subsystem has been completely 13194cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 13195versions. The Lint option files used are included in the 13196/acpi/generate/lint directory. 13197 13198Implemented enhanced status/error checking across the entire 13199Hardware manager subsystem. Any hardware errors (reported from 13200the OSL) are now bubbled up and will abort a running control 13201method. 13202 13203 13204Fixed a problem where the per-ACPI-table integer width (32 or 64) 13205was stored only with control method nodes, causing a fault when 13206non-control method code was executed during table loading. The 13207solution implemented uses a global variable to indicate table 13208width across the entire ACPI subsystem. Therefore, ACPI CA does 13209not support mixed integer widths across different ACPI tables 13210(DSDT, SSDT). 13211 13212Fixed a problem where NULL extended fields (X fields) in an ACPI 132132.0 ACPI FADT caused the table load to fail. Although the 13214existing ACPI specification is a bit fuzzy on this topic, the new 13215behavior is to fall back on a ACPI 1.0 field if the corresponding 13216ACPI 2.0 X field is zero (even though the table revision indicates 13217a full ACPI 2.0 table.) The ACPI specification will be updated to 13218clarify this issue. 13219 13220Fixed a problem with the SystemMemory operation region handler 13221where memory was always accessed byte-wise even if the AML- 13222specified access width was larger than a byte. This caused 13223problems on systems with memory-mapped I/O. Memory is now 13224accessed with the width specified. On systems that do not support 13225non-aligned transfers, a check is made to guarantee proper address 13226alignment before proceeding in order to avoid an AML-caused 13227alignment fault within the kernel. 13228 13229 13230Fixed a problem with the ExtendedIrq resource where only one byte 13231of the 4-byte Irq field was extracted. 13232 13233Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 13234function was out of date and required a rewrite. 13235 13236Code and Data Size: Current core subsystem library sizes are shown 13237below. These are the code and data sizes for the acpica.lib 13238produced by the Microsoft Visual C++ 6.0 compiler, and these 13239values do not include any ACPI driver or OSPM code. The debug 13240version of the code includes the debug output trace mechanism and 13241has a larger code and data size. Note that these values will vary 13242depending on the efficiency of the compiler and the compiler 13243options used during generation. 13244 13245 Previous Release 13246 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13247 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13248 Current Release: 13249 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13250 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13251 13252 132532) Linux 13254 13255PCI IRQ routing fixes (Dominik Brodowski) 13256 13257 132583) iASL Compiler Version X2042: 13259 13260Implemented an additional compile-time error check for a field 13261unit whose size + minimum access width would cause a run-time 13262access beyond the end-of-region. Previously, only the field size 13263itself was checked. 13264 13265The Core subsystem and iASL compiler now share a common parse 13266object in preparation for compile-time evaluation of the type 132673/4/5 ASL operators. 13268 13269 13270---------------------------------------- 13271Summary of changes for this release: 03_29_02 13272 132731) ACPI CA Core Subsystem Version 20020329: 13274 13275Implemented support for late evaluation of TermArg operands to 13276Buffer and Package objects. This allows complex expressions to be 13277used in the declarations of these object types. 13278 13279Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 132801.0, if the field was larger than 32 bits, it was returned as a 13281buffer - otherwise it was returned as an integer. In ACPI 2.0, 13282the field is returned as a buffer only if the field is larger than 1328364 bits. The TableRevision is now considered when making this 13284conversion to avoid incompatibility with existing ASL code. 13285 13286Implemented logical addressing for AcpiOsGetRootPointer. This 13287allows an RSDP with either a logical or physical address. With 13288this support, the host OS can now override all ACPI tables with 13289one logical RSDP. Includes implementation of "typed" pointer 13290support to allow a common data type for both physical and logical 13291pointers internally. This required a change to the 13292AcpiOsGetRootPointer interface. 13293 13294Implemented the use of ACPI 2.0 Generic Address Structures for all 13295GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 13296mapped I/O for these ACPI features. 13297 13298Initialization now ignores not only non-required tables (All 13299tables other than the FADT, FACS, DSDT, and SSDTs), but also does 13300not validate the table headers of unrecognized tables. 13301 13302Fixed a problem where a notify handler could only be 13303installed/removed on an object of type Device. All "notify" 13304 13305objects are now supported -- Devices, Processor, Power, and 13306Thermal. 13307 13308Removed most verbosity from the ACPI_DB_INFO debug level. Only 13309critical information is returned when this debug level is enabled. 13310 13311Code and Data Size: Current core subsystem library sizes are shown 13312below. These are the code and data sizes for the acpica.lib 13313produced by the Microsoft Visual C++ 6.0 compiler, and these 13314values do not include any ACPI driver or OSPM code. The debug 13315version of the code includes the debug output trace mechanism and 13316has a larger code and data size. Note that these values will vary 13317depending on the efficiency of the compiler and the compiler 13318options used during generation. 13319 13320 Previous Release 13321 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13322 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13323 Current Release: 13324 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13325 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13326 13327 133282) Linux: 13329 13330The processor driver (acpi_processor.c) now fully supports ACPI 133312.0-based processor performance control (e.g. Intel(R) 13332SpeedStep(TM) technology) Note that older laptops that only have 13333the Intel "applet" interface are not supported through this. The 13334'limit' and 'performance' interface (/proc) are fully functional. 13335[Note that basic policy for controlling performance state 13336transitions will be included in the next version of ospmd.] The 13337idle handler was modified to more aggressively use C2, and PIIX4 13338errata handling underwent a complete overhaul (big thanks to 13339Dominik Brodowski). 13340 13341Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 13342based devices in the ACPI namespace are now dynamically bound 13343(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 13344This allows, among other things, ACPI to resolve bus numbers for 13345subordinate PCI bridges. 13346 13347Enhanced PCI IRQ routing to get the proper bus number for _PRT 13348entries defined underneath PCI bridges. 13349 13350Added IBM 600E to bad bios list due to invalid _ADR value for 13351PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 13352 13353In the process of adding full MADT support (e.g. IOAPIC) for IA32 13354(acpi.c, mpparse.c) -- stay tuned. 13355 13356Added back visual differentiation between fixed-feature and 13357control-method buttons in dmesg. Buttons are also subtyped (e.g. 13358button/power/PWRF) to simplify button identification. 13359 13360We no longer use -Wno-unused when compiling debug. Please ignore 13361any "_THIS_MODULE defined but not used" messages. 13362 13363Can now shut down the system using "magic sysrq" key. 13364 13365 133663) iASL Compiler version 2041: 13367 13368Fixed a problem where conversion errors for hex/octal/decimal 13369constants were not reported. 13370 13371Implemented a fix for the General Register template Address field. 13372This field was 8 bits when it should be 64. 13373 13374Fixed a problem where errors/warnings were no longer being emitted 13375within the listing output file. 13376 13377Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 13378exactly 4 characters, alphanumeric only. 13379 13380 13381 13382 13383---------------------------------------- 13384Summary of changes for this release: 03_08_02 13385 13386 133871) ACPI CA Core Subsystem Version 20020308: 13388 13389Fixed a problem with AML Fields where the use of the "AccessAny" 13390keyword could cause an interpreter error due to attempting to read 13391or write beyond the end of the parent Operation Region. 13392 13393Fixed a problem in the SystemMemory Operation Region handler where 13394an attempt was made to map memory beyond the end of the region. 13395This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 13396errors on some Linux systems. 13397 13398Fixed a problem where the interpreter/namespace "search to root" 13399algorithm was not functioning for some object types. Relaxed the 13400internal restriction on the search to allow upsearches for all 13401external object types as well as most internal types. 13402 13403 134042) Linux: 13405 13406We now use safe_halt() macro versus individual calls to sti | hlt. 13407 13408Writing to the processor limit interface should now work. "echo 1" 13409will increase the limit, 2 will decrease, and 0 will reset to the 13410 13411default. 13412 13413 134143) ASL compiler: 13415 13416Fixed segfault on Linux version. 13417 13418 13419---------------------------------------- 13420Summary of changes for this release: 02_25_02 13421 134221) ACPI CA Core Subsystem: 13423 13424 13425Fixed a problem where the GPE bit masks were not initialized 13426properly, causing erratic GPE behavior. 13427 13428Implemented limited support for multiple calling conventions. The 13429code can be generated with either the VPL (variable parameter 13430list, or "C") convention, or the FPL (fixed parameter list, or 13431"Pascal") convention. The core subsystem is about 3.4% smaller 13432when generated with FPL. 13433 13434 134352) Linux 13436 13437Re-add some /proc/acpi/event functionality that was lost during 13438the rewrite 13439 13440Resolved issue with /proc events for fixed-feature buttons showing 13441up as the system device. 13442 13443Fixed checks on C2/C3 latencies to be inclusive of maximum values. 13444 13445Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 13446 13447Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 13448 13449Fixed limit interface & usage to fix bugs with passive cooling 13450hysterisis. 13451 13452Restructured PRT support. 13453 13454 13455---------------------------------------- 13456Summary of changes for this label: 02_14_02 13457 13458 134591) ACPI CA Core Subsystem: 13460 13461Implemented support in AcpiLoadTable to allow loading of FACS and 13462FADT tables. 13463 13464Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 13465been removed. All 64-bit platforms should be migrated to the ACPI 134662.0 tables. The actbl71.h header has been removed from the source 13467tree. 13468 13469All C macros defined within the subsystem have been prefixed with 13470"ACPI_" to avoid collision with other system include files. 13471 13472Removed the return value for the two AcpiOsPrint interfaces, since 13473it is never used and causes lint warnings for ignoring the return 13474value. 13475 13476Added error checking to all internal mutex acquire and release 13477calls. Although a failure from one of these interfaces is 13478probably a fatal system error, these checks will cause the 13479immediate abort of the currently executing method or interface. 13480 13481Fixed a problem where the AcpiSetCurrentResources interface could 13482fault. This was a side effect of the deployment of the new memory 13483allocation model. 13484 13485Fixed a couple of problems with the Global Lock support introduced 13486in the last major build. The "common" (1.0/2.0) internal FACS was 13487being overwritten with the FACS signature and clobbering the 13488Global Lock pointer. Also, the actual firmware FACS was being 13489unmapped after construction of the "common" FACS, preventing 13490access to the actual Global Lock field within it. The "common" 13491internal FACS is no longer installed as an actual ACPI table; it 13492is used simply as a global. 13493 13494Code and Data Size: Current core subsystem library sizes are shown 13495below. These are the code and data sizes for the acpica.lib 13496produced by the Microsoft Visual C++ 6.0 compiler, and these 13497values do not include any ACPI driver or OSPM code. The debug 13498version of the code includes the debug output trace mechanism and 13499has a larger code and data size. Note that these values will vary 13500depending on the efficiency of the compiler and the compiler 13501options used during generation. 13502 13503 Previous Release (02_07_01) 13504 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13505 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13506 Current Release: 13507 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13508 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13509 13510 135112) Linux 13512 13513Updated Linux-specific code for core macro and OSL interface 13514changes described above. 13515 13516Improved /proc/acpi/event. It now can be opened only once and has 13517proper poll functionality. 13518 13519Fixed and restructured power management (acpi_bus). 13520 13521Only create /proc "view by type" when devices of that class exist. 13522 13523Fixed "charging/discharging" bug (and others) in acpi_battery. 13524 13525Improved thermal zone code. 13526 13527 135283) ASL Compiler, version X2039: 13529 13530 13531Implemented the new compiler restriction on ASL String hex/octal 13532escapes to non-null, ASCII values. An error results if an invalid 13533value is used. (This will require an ACPI 2.0 specification 13534change.) 13535 13536AML object labels that are output to the optional C and ASM source 13537are now prefixed with both the ACPI table signature and table ID 13538to help guarantee uniqueness within a large BIOS project. 13539 13540 13541---------------------------------------- 13542Summary of changes for this label: 02_01_02 13543 135441) ACPI CA Core Subsystem: 13545 13546ACPI 2.0 support is complete in the entire Core Subsystem and the 13547ASL compiler. All new ACPI 2.0 operators are implemented and all 13548other changes for ACPI 2.0 support are complete. With 13549simultaneous code and data optimizations throughout the subsystem, 13550ACPI 2.0 support has been implemented with almost no additional 13551cost in terms of code and data size. 13552 13553Implemented a new mechanism for allocation of return buffers. If 13554the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 13555be allocated on behalf of the caller. Consolidated all return 13556buffer validation and allocation to a common procedure. Return 13557buffers will be allocated via the primary OSL allocation interface 13558since it appears that a separate pool is not needed by most users. 13559If a separate pool is required for these buffers, the caller can 13560still use the original mechanism and pre-allocate the buffer(s). 13561 13562Implemented support for string operands within the DerefOf 13563operator. 13564 13565Restructured the Hardware and Event managers to be table driven, 13566simplifying the source code and reducing the amount of generated 13567code. 13568 13569Split the common read/write low-level ACPI register bitfield 13570procedure into a separate read and write, simplifying the code 13571considerably. 13572 13573Obsoleted the AcpiOsCallocate OSL interface. This interface was 13574used only a handful of times and didn't have enough critical mass 13575for a separate interface. Replaced with a common calloc procedure 13576in the core. 13577 13578Fixed a reported problem with the GPE number mapping mechanism 13579that allows GPE1 numbers to be non-contiguous with GPE0. 13580Reorganized the GPE information and shrunk a large array that was 13581originally large enough to hold info for all possible GPEs (256) 13582to simply large enough to hold all GPEs up to the largest GPE 13583number on the machine. 13584 13585Fixed a reported problem with resource structure alignment on 64- 13586bit platforms. 13587 13588Changed the AcpiEnableEvent and AcpiDisableEvent external 13589interfaces to not require any flags for the common case of 13590enabling/disabling a GPE. 13591 13592Implemented support to allow a "Notify" on a Processor object. 13593 13594Most TBDs in comments within the source code have been resolved 13595and eliminated. 13596 13597 13598Fixed a problem in the interpreter where a standalone parent 13599prefix (^) was not handled correctly in the interpreter and 13600debugger. 13601 13602Removed obsolete and unnecessary GPE save/restore code. 13603 13604Implemented Field support in the ASL Load operator. This allows a 13605table to be loaded from a named field, in addition to loading a 13606table directly from an Operation Region. 13607 13608Implemented timeout and handle support in the external Global Lock 13609interfaces. 13610 13611Fixed a problem in the AcpiDump utility where pathnames were no 13612longer being generated correctly during the dump of named objects. 13613 13614Modified the AML debugger to give a full display of if/while 13615predicates instead of just one AML opcode at a time. (The 13616predicate can have several nested ASL statements.) The old method 13617was confusing during single stepping. 13618 13619Code and Data Size: Current core subsystem library sizes are shown 13620below. These are the code and data sizes for the acpica.lib 13621produced by the Microsoft Visual C++ 6.0 compiler, and these 13622values do not include any ACPI driver or OSPM code. The debug 13623version of the code includes the debug output trace mechanism and 13624has a larger code and data size. Note that these values will vary 13625depending on the efficiency of the compiler and the compiler 13626options used during generation. 13627 13628 Previous Release (12_18_01) 13629 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 13630 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 13631 Current Release: 13632 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13633 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13634 136352) Linux 13636 13637 Implemented fix for PIIX reverse throttling errata (Processor 13638driver) 13639 13640Added new Limit interface (Processor and Thermal drivers) 13641 13642New thermal policy (Thermal driver) 13643 13644Many updates to /proc 13645 13646Battery "low" event support (Battery driver) 13647 13648Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 13649 13650IA32 - IA64 initialization unification, no longer experimental 13651 13652Menuconfig options redesigned 13653 136543) ASL Compiler, version X2037: 13655 13656Implemented several new output features to simplify integration of 13657AML code into firmware: 1) Output the AML in C source code with 13658labels for each named ASL object. The original ASL source code 13659is interleaved as C comments. 2) Output the AML in ASM source code 13660with labels and interleaved ASL source. 3) Output the AML in 13661raw hex table form, in either C or ASM. 13662 13663Implemented support for optional string parameters to the 13664LoadTable operator. 13665 13666Completed support for embedded escape sequences within string 13667literals. The compiler now supports all single character escapes 13668as well as the Octal and Hex escapes. Note: the insertion of a 13669null byte into a string literal (via the hex/octal escape) causes 13670the string to be immediately terminated. A warning is issued. 13671 13672Fixed a problem where incorrect AML was generated for the case 13673where an ASL namepath consists of a single parent prefix ( 13674 13675) with no trailing name segments. 13676 13677The compiler has been successfully generated with a 64-bit C 13678compiler. 13679 13680 13681 13682 13683---------------------------------------- 13684Summary of changes for this label: 12_18_01 13685 136861) Linux 13687 13688Enhanced blacklist with reason and severity fields. Any table's 13689signature may now be used to identify a blacklisted system. 13690 13691Call _PIC control method to inform the firmware which interrupt 13692model the OS is using. Turn on any disabled link devices. 13693 13694Cleaned up busmgr /proc error handling (Andreas Dilger) 13695 13696 2) ACPI CA Core Subsystem: 13697 13698Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 13699while loop) 13700 13701Completed implementation of the ACPI 2.0 "Continue", 13702"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 13703operators. All new ACPI 2.0 operators are now implemented in both 13704the ASL compiler and the AML interpreter. The only remaining ACPI 137052.0 task is support for the String data type in the DerefOf 13706operator. Fixed a problem with AcquireMutex where the status code 13707was lost if the caller had to actually wait for the mutex. 13708 13709Increased the maximum ASL Field size from 64K bits to 4G bits. 13710 13711Completed implementation of the external Global Lock interfaces -- 13712AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 13713Handler parameters were added. 13714 13715Completed another pass at removing warnings and issues when 13716compiling with 64-bit compilers. The code now compiles cleanly 13717with the Intel 64-bit C/C++ compiler. Most notably, the pointer 13718add and subtract (diff) macros have changed considerably. 13719 13720 13721Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1372264-bit platforms, 32-bits on all others. This type is used 13723wherever memory allocation and/or the C sizeof() operator is used, 13724and affects the OSL memory allocation interfaces AcpiOsAllocate 13725and AcpiOsCallocate. 13726 13727Implemented sticky user breakpoints in the AML debugger. 13728 13729Code and Data Size: Current core subsystem library sizes are shown 13730below. These are the code and data sizes for the acpica.lib 13731produced by the Microsoft Visual C++ 6.0 compiler, and these 13732values do not include any ACPI driver or OSPM code. The debug 13733version of the code includes the debug output trace mechanism and 13734has a larger code and data size. Note that these values will vary 13735depending on the efficiency of the compiler and the compiler 13736options used during generation. 13737 13738 Previous Release (12_05_01) 13739 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 13740 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 13741 Current Release: 13742 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 13743 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 13744 13745 3) ASL Compiler, version X2034: 13746 13747Now checks for (and generates an error if detected) the use of a 13748Break or Continue statement without an enclosing While statement. 13749 13750 13751Successfully generated the compiler with the Intel 64-bit C 13752compiler. 13753 13754 ---------------------------------------- 13755Summary of changes for this label: 12_05_01 13756 13757 1) ACPI CA Core Subsystem: 13758 13759The ACPI 2.0 CopyObject operator is fully implemented. This 13760operator creates a new copy of an object (and is also used to 13761bypass the "implicit conversion" mechanism of the Store operator.) 13762 13763The ACPI 2.0 semantics for the SizeOf operator are fully 13764implemented. The change is that performing a SizeOf on a 13765reference object causes an automatic dereference of the object to 13766tha actual value before the size is evaluated. This behavior was 13767undefined in ACPI 1.0. 13768 13769The ACPI 2.0 semantics for the Extended IRQ resource descriptor 13770have been implemented. The interrupt polarity and mode are now 13771independently set. 13772 13773Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 13774appearing in Package objects were not properly converted to 13775integers when the internal Package was converted to an external 13776object (via the AcpiEvaluateObject interface.) 13777 13778Fixed a problem with the namespace object deletion mechanism for 13779objects created by control methods. There were two parts to this 13780problem: 1) Objects created during the initialization phase method 13781parse were not being deleted, and 2) The object owner ID mechanism 13782to track objects was broken. 13783 13784Fixed a problem where the use of the ASL Scope operator within a 13785control method would result in an invalid opcode exception. 13786 13787Fixed a problem introduced in the previous label where the buffer 13788length required for the _PRT structure was not being returned 13789correctly. 13790 13791Code and Data Size: Current core subsystem library sizes are shown 13792below. These are the code and data sizes for the acpica.lib 13793produced by the Microsoft Visual C++ 6.0 compiler, and these 13794values do not include any ACPI driver or OSPM code. The debug 13795version of the code includes the debug output trace mechanism and 13796has a larger code and data size. Note that these values will vary 13797depending on the efficiency of the compiler and the compiler 13798options used during generation. 13799 13800 Previous Release (11_20_01) 13801 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 13802 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 13803 13804 Current Release: 13805 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 13806 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 13807 13808 2) Linux: 13809 13810Updated all files to apply cleanly against 2.4.16. 13811 13812Added basic PCI Interrupt Routing Table (PRT) support for IA32 13813(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 13814version supports both static and dyanmic PRT entries, but dynamic 13815entries are treated as if they were static (not yet 13816reconfigurable). Architecture- specific code to use this data is 13817absent on IA32 but should be available shortly. 13818 13819Changed the initialization sequence to start the ACPI interpreter 13820(acpi_init) prior to initialization of the PCI driver (pci_init) 13821in init/main.c. This ordering is required to support PRT and 13822facilitate other (future) enhancement. A side effect is that the 13823ACPI bus driver and certain device drivers can no longer be loaded 13824as modules. 13825 13826Modified the 'make menuconfig' options to allow PCI Interrupt 13827Routing support to be included without the ACPI Bus and other 13828device drivers. 13829 13830 3) ASL Compiler, version X2033: 13831 13832Fixed some issues with the use of the new CopyObject and 13833DataTableRegion operators. Both are fully functional. 13834 13835 ---------------------------------------- 13836Summary of changes for this label: 11_20_01 13837 13838 20 November 2001. Summary of changes for this release. 13839 13840 1) ACPI CA Core Subsystem: 13841 13842Updated Index support to match ACPI 2.0 semantics. Storing a 13843Integer, String, or Buffer to an Index of a Buffer will store only 13844the least-significant byte of the source to the Indexed buffer 13845byte. Multiple writes are not performed. 13846 13847Fixed a problem where the access type used in an AccessAs ASL 13848operator was not recorded correctly into the field object. 13849 13850Fixed a problem where ASL Event objects were created in a 13851signalled state. Events are now created in an unsignalled state. 13852 13853The internal object cache is now purged after table loading and 13854initialization to reduce the use of dynamic kernel memory -- on 13855the assumption that object use is greatest during the parse phase 13856of the entire table (versus the run-time use of individual control 13857methods.) 13858 13859ACPI 2.0 variable-length packages are now fully operational. 13860 13861Code and Data Size: Code and Data optimizations have permitted new 13862feature development with an actual reduction in the library size. 13863Current core subsystem library sizes are shown below. These are 13864the code and data sizes for the acpica.lib produced by the 13865Microsoft Visual C++ 6.0 compiler, and these values do not include 13866any ACPI driver or OSPM code. The debug version of the code 13867includes the debug output trace mechanism and has a larger code 13868and data size. Note that these values will vary depending on the 13869efficiency of the compiler and the compiler options used during 13870generation. 13871 13872 Previous Release (11_09_01): 13873 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 13874 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 13875 13876 Current Release: 13877 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 13878 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 13879 13880 2) Linux: 13881 13882Enhanced the ACPI boot-time initialization code to allow the use 13883of Local APIC tables for processor enumeration on IA-32, and to 13884pave the way for a fully MPS-free boot (on SMP systems) in the 13885near future. This functionality replaces 13886arch/i386/kernel/acpitables.c, which was introduced in an earlier 138872.4.15-preX release. To enable this feature you must add 13888"acpi_boot=on" to the kernel command line -- see the help entry 13889for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 13890the works... 13891 13892Restructured the configuration options to allow boot-time table 13893parsing support without inclusion of the ACPI Interpreter (and 13894other) code. 13895 13896NOTE: This release does not include fixes for the reported events, 13897power-down, and thermal passive cooling issues (coming soon). 13898 13899 3) ASL Compiler: 13900 13901Added additional typechecking for Fields within restricted access 13902Operation Regions. All fields within EC and CMOS regions must be 13903declared with ByteAcc. All fields withing SMBus regions must be 13904declared with the BufferAcc access type. 13905 13906Fixed a problem where the listing file output of control methods 13907no longer interleaved the actual AML code with the ASL source 13908code. 13909 13910 13911 13912 13913---------------------------------------- 13914Summary of changes for this label: 11_09_01 13915 139161) ACPI CA Core Subsystem: 13917 13918Implemented ACPI 2.0-defined support for writes to fields with a 13919Buffer, String, or Integer source operand that is smaller than the 13920target field. In these cases, the source operand is zero-extended 13921to fill the target field. 13922 13923Fixed a problem where a Field starting bit offset (within the 13924parent operation region) was calculated incorrectly if the 13925 13926alignment of the field differed from the access width. This 13927affected CreateWordField, CreateDwordField, CreateQwordField, and 13928possibly other fields that use the "AccessAny" keyword. 13929 13930Fixed a problem introduced in the 11_02_01 release where indirect 13931stores through method arguments did not operate correctly. 13932 139332) Linux: 13934 13935Implemented boot-time ACPI table parsing support 13936(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 13937facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 13938legacy BIOS interfaces (e.g. MPS) for the configuration of system 13939processors, memory, and interrupts during setup_arch(). Note that 13940this patch does not include the required architecture-specific 13941changes required to apply this information -- subsequent patches 13942will be posted for both IA32 and IA64 to achieve this. 13943 13944Added low-level sleep support for IA32 platforms, courtesy of Pat 13945Mochel. This allows IA32 systems to transition to/from various 13946sleeping states (e.g. S1, S3), although the lack of a centralized 13947driver model and power-manageable drivers will prevent its 13948(successful) use on most systems. 13949 13950Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 13951submenu, unified IA32 and IA64 options, added new "Boot using ACPI 13952tables" option, etc. 13953 13954Increased the default timeout for the EC driver from 1ms to 10ms 13955(1000 cycles of 10us) to try to address AE_TIME errors during EC 13956transactions. 13957 13958 ---------------------------------------- 13959Summary of changes for this label: 11_02_01 13960 139611) ACPI CA Core Subsystem: 13962 13963ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 13964(QWordAcc keyword). All ACPI 2.0 64-bit support is now 13965implemented. 13966 13967OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 13968changes to support ACPI 2.0 Qword field access. Read/Write 13969PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 13970accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 13971the value parameter for the address space handler interface is now 13972an ACPI_INTEGER. OSL implementations of these interfaces must now 13973handle the case where the Width parameter is 64. 13974 13975Index Fields: Fixed a problem where unaligned bit assembly and 13976disassembly for IndexFields was not supported correctly. 13977 13978Index and Bank Fields: Nested Index and Bank Fields are now 13979supported. During field access, a check is performed to ensure 13980that the value written to an Index or Bank register is not out of 13981the range of the register. The Index (or Bank) register is 13982written before each access to the field data. Future support will 13983include allowing individual IndexFields to be wider than the 13984DataRegister width. 13985 13986Fields: Fixed a problem where the AML interpreter was incorrectly 13987attempting to write beyond the end of a Field/OpRegion. This was 13988a boundary case that occurred when a DWORD field was written to a 13989BYTE access OpRegion, forcing multiple writes and causing the 13990interpreter to write one datum too many. 13991 13992Fields: Fixed a problem with Field/OpRegion access where the 13993starting bit address of a field was incorrectly calculated if the 13994current access type was wider than a byte (WordAcc, DwordAcc, or 13995QwordAcc). 13996 13997Fields: Fixed a problem where forward references to individual 13998FieldUnits (individual Field names within a Field definition) were 13999not resolved during the AML table load. 14000 14001Fields: Fixed a problem where forward references from a Field 14002definition to the parent Operation Region definition were not 14003resolved during the AML table load. 14004 14005Fields: Duplicate FieldUnit names within a scope are now detected 14006during AML table load. 14007 14008Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 14009returned an incorrect name for the root node. 14010 14011Code and Data Size: Code and Data optimizations have permitted new 14012feature development with an actual reduction in the library size. 14013Current core subsystem library sizes are shown below. These are 14014the code and data sizes for the acpica.lib produced by the 14015Microsoft Visual C++ 6.0 compiler, and these values do not include 14016any ACPI driver or OSPM code. The debug version of the code 14017includes the debug output trace mechanism and has a larger code 14018and data size. Note that these values will vary depending on the 14019efficiency of the compiler and the compiler options used during 14020generation. 14021 14022 Previous Release (10_18_01): 14023 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14024 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14025 14026 Current Release: 14027 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14028 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14029 14030 2) Linux: 14031 14032Improved /proc processor output (Pavel Machek) Re-added 14033MODULE_LICENSE("GPL") to all modules. 14034 14035 3) ASL Compiler version X2030: 14036 14037Duplicate FieldUnit names within a scope are now detected and 14038flagged as errors. 14039 14040 4) Documentation: 14041 14042Programmer Reference updated to reflect OSL and address space 14043handler interface changes described above. 14044 14045---------------------------------------- 14046Summary of changes for this label: 10_18_01 14047 14048ACPI CA Core Subsystem: 14049 14050Fixed a problem with the internal object reference count mechanism 14051that occasionally caused premature object deletion. This resolves 14052all of the outstanding problem reports where an object is deleted 14053in the middle of an interpreter evaluation. Although this problem 14054only showed up in rather obscure cases, the solution to the 14055problem involved an adjustment of all reference counts involving 14056objects attached to namespace nodes. 14057 14058Fixed a problem with Field support in the interpreter where 14059writing to an aligned field whose length is an exact multiple (2 14060or greater) of the field access granularity would cause an attempt 14061to write beyond the end of the field. 14062 14063The top level AML opcode execution functions within the 14064interpreter have been renamed with a more meaningful and 14065consistent naming convention. The modules exmonad.c and 14066exdyadic.c were eliminated. New modules are exoparg1.c, 14067exoparg2.c, exoparg3.c, and exoparg6.c. 14068 14069Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 14070 14071Fixed a problem where the AML debugger was causing some internal 14072objects to not be deleted during subsystem termination. 14073 14074Fixed a problem with the external AcpiEvaluateObject interface 14075where the subsystem would fault if the named object to be 14076evaluated refered to a constant such as Zero, Ones, etc. 14077 14078Fixed a problem with IndexFields and BankFields where the 14079subsystem would fault if the index, data, or bank registers were 14080not defined in the same scope as the field itself. 14081 14082Added printf format string checking for compilers that support 14083this feature. Corrected more than 50 instances of issues with 14084format specifiers within invocations of ACPI_DEBUG_PRINT 14085throughout the core subsystem code. 14086 14087The ASL "Revision" operator now returns the ACPI support level 14088implemented in the core - the value "2" since the ACPI 2.0 support 14089is more than 50% implemented. 14090 14091Enhanced the output of the AML debugger "dump namespace" command 14092to output in a more human-readable form. 14093 14094Current core subsystem library code sizes are shown below. These 14095 14096are the code and data sizes for the acpica.lib produced by the 14097Microsoft Visual C++ 6.0 compiler, and these values do not include 14098any ACPI driver or OSPM code. The debug version of the code 14099includes the full debug trace mechanism -- leading to a much 14100 14101larger code and data size. Note that these values will vary 14102depending on the efficiency of the compiler and the compiler 14103options used during generation. 14104 14105 Previous Label (09_20_01): 14106 Non-Debug Version: 65K Code, 5K Data, 70K Total 14107 Debug Version: 138K Code, 58K Data, 196K Total 14108 14109 This Label: 14110 14111 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14112 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14113 14114Linux: 14115 14116Implemented a "Bad BIOS Blacklist" to track machines that have 14117known ASL/AML problems. 14118 14119Enhanced the /proc interface for the thermal zone driver and added 14120support for _HOT (the critical suspend trip point). The 'info' 14121file now includes threshold/policy information, and allows setting 14122of _SCP (cooling preference) and _TZP (polling frequency) values 14123to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 14124frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 14125preference to the passive/quiet mode (if supported by the ASL). 14126 14127Implemented a workaround for a gcc bug that resuted in an OOPs 14128when loading the control method battery driver. 14129 14130 ---------------------------------------- 14131Summary of changes for this label: 09_20_01 14132 14133 ACPI CA Core Subsystem: 14134 14135The AcpiEnableEvent and AcpiDisableEvent interfaces have been 14136modified to allow individual GPE levels to be flagged as wake- 14137enabled (i.e., these GPEs are to remain enabled when the platform 14138sleeps.) 14139 14140The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 14141support wake-enabled GPEs. This means that upon entering the 14142sleep state, all GPEs that are not wake-enabled are disabled. 14143When leaving the sleep state, these GPEs are reenabled. 14144 14145A local double-precision divide/modulo module has been added to 14146enhance portability to OS kernels where a 64-bit math library is 14147not available. The new module is "utmath.c". 14148 14149Several optimizations have been made to reduce the use of CPU 14150stack. Originally over 2K, the maximum stack usage is now below 141512K at 1860 bytes (1.82k) 14152 14153Fixed a problem with the AcpiGetFirmwareTable interface where the 14154root table pointer was not mapped into a logical address properly. 14155 14156Fixed a problem where a NULL pointer was being dereferenced in the 14157interpreter code for the ASL Notify operator. 14158 14159Fixed a problem where the use of the ASL Revision operator 14160returned an error. This operator now returns the current version 14161of the ACPI CA core subsystem. 14162 14163Fixed a problem where objects passed as control method parameters 14164to AcpiEvaluateObject were always deleted at method termination. 14165However, these objects may end up being stored into the namespace 14166by the called method. The object reference count mechanism was 14167applied to these objects instead of a force delete. 14168 14169Fixed a problem where static strings or buffers (contained in the 14170AML code) that are declared as package elements within the ASL 14171code could cause a fault because the interpreter would attempt to 14172delete them. These objects are now marked with the "static 14173object" flag to prevent any attempt to delete them. 14174 14175Implemented an interpreter optimization to use operands directly 14176from the state object instead of extracting the operands to local 14177variables. This reduces stack use and code size, and improves 14178performance. 14179 14180The module exxface.c was eliminated as it was an unnecessary extra 14181layer of code. 14182 14183Current core subsystem library code sizes are shown below. These 14184are the code and data sizes for the acpica.lib produced by the 14185Microsoft Visual C++ 6.0 compiler, and these values do not include 14186any ACPI driver or OSPM code. The debug version of the code 14187includes the full debug trace mechanism -- leading to a much 14188larger code and data size. Note that these values will vary 14189depending on the efficiency of the compiler and the compiler 14190options used during generation. 14191 14192 Non-Debug Version: 65K Code, 5K Data, 70K Total 14193(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 14194Total (Previously 195K) 14195 14196Linux: 14197 14198Support for ACPI 2.0 64-bit integers has been added. All ACPI 14199Integer objects are now 64 bits wide 14200 14201All Acpi data types and structures are now in lower case. Only 14202Acpi macros are upper case for differentiation. 14203 14204 Documentation: 14205 14206Changes to the external interfaces as described above. 14207 14208 ---------------------------------------- 14209Summary of changes for this label: 08_31_01 14210 14211 ACPI CA Core Subsystem: 14212 14213A bug with interpreter implementation of the ASL Divide operator 14214was found and fixed. The implicit function return value (not the 14215explicit store operands) was returning the remainder instead of 14216the quotient. This was a longstanding bug and it fixes several 14217known outstanding issues on various platforms. 14218 14219The ACPI_DEBUG_PRINT and function trace entry/exit macros have 14220been further optimized for size. There are 700 invocations of the 14221DEBUG_PRINT macro alone, so each optimization reduces the size of 14222the debug version of the subsystem significantly. 14223 14224A stack trace mechanism has been implemented. The maximum stack 14225usage is about 2K on 32-bit platforms. The debugger command "stat 14226stack" will display the current maximum stack usage. 14227 14228All public symbols and global variables within the subsystem are 14229now prefixed with the string "Acpi". This keeps all of the 14230symbols grouped together in a kernel map, and avoids conflicts 14231with other kernel subsystems. 14232 14233Most of the internal fixed lookup tables have been moved into the 14234code segment via the const operator. 14235 14236Several enhancements have been made to the interpreter to both 14237reduce the code size and improve performance. 14238 14239Current core subsystem library code sizes are shown below. These 14240are the code and data sizes for the acpica.lib produced by the 14241Microsoft Visual C++ 6.0 compiler, and these values do not include 14242any ACPI driver or OSPM code. The debug version of the code 14243includes the full debug trace mechanism which contains over 700 14244invocations of the DEBUG_PRINT macro, 500 function entry macro 14245invocations, and over 900 function exit macro invocations -- 14246leading to a much larger code and data size. Note that these 14247values will vary depending on the efficiency of the compiler and 14248the compiler options used during generation. 14249 14250 Non-Debug Version: 64K Code, 5K Data, 69K Total 14251Debug Version: 137K Code, 58K Data, 195K Total 14252 14253 Linux: 14254 14255Implemented wbinvd() macro, pending a kernel-wide definition. 14256 14257Fixed /proc/acpi/event to handle poll() and short reads. 14258 14259 ASL Compiler, version X2026: 14260 14261Fixed a problem introduced in the previous label where the AML 14262 14263code emitted for package objects produced packages with zero 14264length. 14265 14266 ---------------------------------------- 14267Summary of changes for this label: 08_16_01 14268 14269ACPI CA Core Subsystem: 14270 14271The following ACPI 2.0 ASL operators have been implemented in the 14272AML interpreter (These are already supported by the Intel ASL 14273compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 14274ToBuffer. Support for 64-bit AML constants is implemented in the 14275AML parser, debugger, and disassembler. 14276 14277The internal memory tracking mechanism (leak detection code) has 14278been upgraded to reduce the memory overhead (a separate tracking 14279block is no longer allocated for each memory allocation), and now 14280supports all of the internal object caches. 14281 14282The data structures and code for the internal object caches have 14283been coelesced and optimized so that there is a single cache and 14284memory list data structure and a single group of functions that 14285implement generic cache management. This has reduced the code 14286size in both the debug and release versions of the subsystem. 14287 14288The DEBUG_PRINT macro(s) have been optimized for size and replaced 14289by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 14290different, because it generates a single call to an internal 14291function. This results in a savings of about 90 bytes per 14292invocation, resulting in an overall code and data savings of about 1429316% in the debug version of the subsystem. 14294 14295 Linux: 14296 14297Fixed C3 disk corruption problems and re-enabled C3 on supporting 14298machines. 14299 14300Integrated low-level sleep code by Patrick Mochel. 14301 14302Further tweaked source code Linuxization. 14303 14304Other minor fixes. 14305 14306 ASL Compiler: 14307 14308Support for ACPI 2.0 variable length packages is fixed/completed. 14309 14310Fixed a problem where the optional length parameter for the ACPI 143112.0 ToString operator. 14312 14313Fixed multiple extraneous error messages when a syntax error is 14314detected within the declaration line of a control method. 14315 14316 ---------------------------------------- 14317Summary of changes for this label: 07_17_01 14318 14319ACPI CA Core Subsystem: 14320 14321Added a new interface named AcpiGetFirmwareTable to obtain any 14322ACPI table via the ACPI signature. The interface can be called at 14323any time during kernel initialization, even before the kernel 14324virtual memory manager is initialized and paging is enabled. This 14325allows kernel subsystems to obtain ACPI tables very early, even 14326before the ACPI CA subsystem is initialized. 14327 14328Fixed a problem where Fields defined with the AnyAcc attribute 14329could be resolved to the incorrect address under the following 14330conditions: 1) the field width is larger than 8 bits and 2) the 14331parent operation region is not defined on a DWORD boundary. 14332 14333Fixed a problem where the interpreter is not being locked during 14334namespace initialization (during execution of the _INI control 14335methods), causing an error when an attempt is made to release it 14336later. 14337 14338ACPI 2.0 support in the AML Interpreter has begun and will be 14339ongoing throughout the rest of this year. In this label, The Mod 14340operator is implemented. 14341 14342Added a new data type to contain full PCI addresses named 14343ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 14344and Function values. 14345 14346 Linux: 14347 14348Enhanced the Linux version of the source code to change most 14349capitalized ACPI type names to lowercase. For example, all 14350instances of ACPI_STATUS are changed to acpi_status. This will 14351result in a large diff, but the change is strictly cosmetic and 14352aligns the CA code closer to the Linux coding standard. 14353 14354OSL Interfaces: 14355 14356The interfaces to the PCI configuration space have been changed to 14357add the PCI Segment number and to split the single 32-bit combined 14358DeviceFunction field into two 16-bit fields. This was 14359accomplished by moving the four values that define an address in 14360PCI configuration space (segment, bus, device, and function) to 14361the new ACPI_PCI_ID structure. 14362 14363The changes to the PCI configuration space interfaces led to a 14364reexamination of the complete set of address space access 14365interfaces for PCI, I/O, and Memory. The previously existing 18 14366interfaces have proven difficult to maintain (any small change 14367must be propagated across at least 6 interfaces) and do not easily 14368allow for future expansion to 64 bits if necessary. Also, on some 14369systems, it would not be appropriate to demultiplex the access 14370width (8, 16, 32,or 64) before calling the OSL if the 14371corresponding native OS interfaces contain a similar access width 14372parameter. For these reasons, the 18 address space interfaces 14373have been replaced by these 6 new ones: 14374 14375AcpiOsReadPciConfiguration 14376AcpiOsWritePciConfiguration 14377AcpiOsReadMemory 14378AcpiOsWriteMemory 14379AcpiOsReadPort 14380AcpiOsWritePort 14381 14382Added a new interface named AcpiOsGetRootPointer to allow the OSL 14383to perform the platform and/or OS-specific actions necessary to 14384obtain the ACPI RSDP table pointer. On IA-32 platforms, this 14385interface will simply call down to the CA core to perform the low- 14386memory search for the table. On IA-64, the RSDP is obtained from 14387EFI. Migrating this interface to the OSL allows the CA core to 14388 14389remain OS and platform independent. 14390 14391Added a new interface named AcpiOsSignal to provide a generic 14392"function code and pointer" interface for various miscellaneous 14393signals and notifications that must be made to the host OS. The 14394first such signals are intended to support the ASL Fatal and 14395Breakpoint operators. In the latter case, the AcpiOsBreakpoint 14396interface has been obsoleted. 14397 14398The definition of the AcpiFormatException interface has been 14399changed to simplify its use. The caller no longer must supply a 14400buffer to the call; A pointer to a const string is now returned 14401directly. This allows the call to be easily used in printf 14402statements, etc. since the caller does not have to manage a local 14403buffer. 14404 14405 14406 ASL Compiler, Version X2025: 14407 14408The ACPI 2.0 Switch/Case/Default operators have been implemented 14409and are fully functional. They will work with all ACPI 1.0 14410interpreters, since the operators are simply translated to If/Else 14411pairs. 14412 14413The ACPI 2.0 ElseIf operator is implemented and will also work 14414with 1.0 interpreters, for the same reason. 14415 14416Implemented support for ACPI 2.0 variable-length packages. These 14417packages have a separate opcode, and their size is determined by 14418the interpreter at run-time. 14419 14420Documentation The ACPI CA Programmer Reference has been updated to 14421reflect the new interfaces and changes to existing interfaces. 14422 14423 ------------------------------------------ 14424Summary of changes for this label: 06_15_01 14425 14426 ACPI CA Core Subsystem: 14427 14428Fixed a problem where a DWORD-accessed field within a Buffer 14429object would get its byte address inadvertently rounded down to 14430the nearest DWORD. Buffers are always Byte-accessible. 14431 14432 ASL Compiler, version X2024: 14433 14434Fixed a problem where the Switch() operator would either fault or 14435hang the compiler. Note however, that the AML code for this ACPI 144362.0 operator is not yet implemented. 14437 14438Compiler uses the new AcpiOsGetTimer interface to obtain compile 14439timings. 14440 14441Implementation of the CreateField operator automatically converts 14442a reference to a named field within a resource descriptor from a 14443byte offset to a bit offset if required. 14444 14445Added some missing named fields from the resource descriptor 14446support. These are the names that are automatically created by the 14447compiler to reference fields within a descriptor. They are only 14448valid at compile time and are not passed through to the AML 14449interpreter. 14450 14451Resource descriptor named fields are now typed as Integers and 14452subject to compile-time typechecking when used in expressions. 14453 14454 ------------------------------------------ 14455Summary of changes for this label: 05_18_01 14456 14457 ACPI CA Core Subsystem: 14458 14459Fixed a couple of problems in the Field support code where bits 14460from adjacent fields could be returned along with the proper field 14461bits. Restructured the field support code to improve performance, 14462readability and maintainability. 14463 14464New DEBUG_PRINTP macro automatically inserts the procedure name 14465into the output, saving hundreds of copies of procedure name 14466strings within the source, shrinking the memory footprint of the 14467debug version of the core subsystem. 14468 14469 Source Code Structure: 14470 14471The source code directory tree was restructured to reflect the 14472current organization of the component architecture. Some files 14473and directories have been moved and/or renamed. 14474 14475 Linux: 14476 14477Fixed leaking kacpidpc processes. 14478 14479Fixed queueing event data even when /proc/acpi/event is not 14480opened. 14481 14482 ASL Compiler, version X2020: 14483 14484Memory allocation performance enhancement - over 24X compile time 14485improvement on large ASL files. Parse nodes and namestring 14486buffers are now allocated from a large internal compiler buffer. 14487 14488The temporary .SRC file is deleted unless the "-s" option is 14489specified 14490 14491The "-d" debug output option now sends all output to the .DBG file 14492instead of the console. 14493 14494"External" second parameter is now optional 14495 14496"ElseIf" syntax now properly allows the predicate 14497 14498Last operand to "Load" now recognized as a Target operand 14499 14500Debug object can now be used anywhere as a normal object. 14501 14502ResourceTemplate now returns an object of type BUFFER 14503 14504EISAID now returns an object of type INTEGER 14505 14506"Index" now works with a STRING operand 14507 14508"LoadTable" now accepts optional parameters 14509 14510"ToString" length parameter is now optional 14511 14512"Interrupt (ResourceType," parse error fixed. 14513 14514"Register" with a user-defined region space parse error fixed 14515 14516Escaped backslash at the end of a string ("\\") scan/parse error 14517fixed 14518 14519"Revision" is now an object of type INTEGER. 14520 14521 14522 14523------------------------------------------ 14524Summary of changes for this label: 05_02_01 14525 14526Linux: 14527 14528/proc/acpi/event now blocks properly. 14529 14530Removed /proc/sys/acpi. You can still dump your DSDT from 14531/proc/acpi/dsdt. 14532 14533 ACPI CA Core Subsystem: 14534 14535Fixed a problem introduced in the previous label where some of the 14536"small" resource descriptor types were not recognized. 14537 14538Improved error messages for the case where an ASL Field is outside 14539the range of the parent operation region. 14540 14541 ASL Compiler, version X2018: 14542 14543 14544Added error detection for ASL Fields that extend beyond the length 14545of the parent operation region (only if the length of the region 14546is known at compile time.) This includes fields that have a 14547minimum access width that is smaller than the parent region, and 14548individual field units that are partially or entirely beyond the 14549extent of the parent. 14550 14551 14552 14553------------------------------------------ 14554Summary of changes for this label: 04_27_01 14555 14556 ACPI CA Core Subsystem: 14557 14558Fixed a problem where the namespace mutex could be released at the 14559wrong time during execution of AcpiRemoveAddressSpaceHandler. 14560 14561Added optional thread ID output for debug traces, to simplify 14562debugging of multiple threads. Added context switch notification 14563when the debug code realizes that a different thread is now 14564executing ACPI code. 14565 14566Some additional external data types have been prefixed with the 14567string "ACPI_" for consistency. This may effect existing code. 14568The data types affected are the external callback typedefs - e.g., 14569 14570WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 14571 14572 Linux: 14573 14574Fixed an issue with the OSL semaphore implementation where a 14575thread was waking up with an error from receiving a SIGCHLD 14576signal. 14577 14578Linux version of ACPI CA now uses the system C library for string 14579manipulation routines instead of a local implementation. 14580 14581Cleaned up comments and removed TBDs. 14582 14583 ASL Compiler, version X2017: 14584 14585Enhanced error detection and reporting for all file I/O 14586operations. 14587 14588 Documentation: 14589 14590Programmer Reference updated to version 1.06. 14591 14592 14593 14594------------------------------------------ 14595Summary of changes for this label: 04_13_01 14596 14597 ACPI CA Core Subsystem: 14598 14599Restructured support for BufferFields and RegionFields. 14600BankFields support is now fully operational. All known 32-bit 14601limitations on field sizes have been removed. Both BufferFields 14602and (Operation) RegionFields are now supported by the same field 14603management code. 14604 14605Resource support now supports QWORD address and IO resources. The 1460616/32/64 bit address structures and the Extended IRQ structure 14607have been changed to properly handle Source Resource strings. 14608 14609A ThreadId of -1 is now used to indicate a "mutex not acquired" 14610condition internally and must never be returned by AcpiOsThreadId. 14611This reserved value was changed from 0 since Unix systems allow a 14612thread ID of 0. 14613 14614Linux: 14615 14616Driver code reorganized to enhance portability 14617 14618Added a kernel configuration option to control ACPI_DEBUG 14619 14620Fixed the EC driver to honor _GLK. 14621 14622ASL Compiler, version X2016: 14623 14624Fixed support for the "FixedHw" keyword. Previously, the FixedHw 14625address space was set to 0, not 0x7f as it should be. 14626 14627 ------------------------------------------ 14628Summary of changes for this label: 03_13_01 14629 14630 ACPI CA Core Subsystem: 14631 14632During ACPI initialization, the _SB_._INI method is now run if 14633present. 14634 14635Notify handler fix - notifies are deferred until the parent method 14636completes execution. This fixes the "mutex already acquired" 14637issue seen occasionally. 14638 14639Part of the "implicit conversion" rules in ACPI 2.0 have been 14640found to cause compatibility problems with existing ASL/AML. The 14641convert "result-to-target-type" implementation has been removed 14642for stores to method Args and Locals. Source operand conversion 14643is still fully implemented. Possible changes to ACPI 2.0 14644specification pending. 14645 14646Fix to AcpiRsCalculatePciRoutingTableLength to return correct 14647length. 14648 14649Fix for compiler warnings for 64-bit compiles. 14650 14651 Linux: 14652 14653/proc output aligned for easier parsing. 14654 14655Release-version compile problem fixed. 14656 14657New kernel configuration options documented in Configure.help. 14658 14659IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 14660context" message. 14661 14662 OSPM: 14663 14664Power resource driver integrated with bus manager. 14665 14666Fixed kernel fault during active cooling for thermal zones. 14667 14668Source Code: 14669 14670The source code tree has been restructured. 14671 14672 14673 14674------------------------------------------ 14675Summary of changes for this label: 03_02_01 14676 14677 Linux OS Services Layer (OSL): 14678 14679Major revision of all Linux-specific code. 14680 14681Modularized all ACPI-specific drivers. 14682 14683Added new thermal zone and power resource drivers. 14684 14685Revamped /proc interface (new functionality is under /proc/acpi). 14686 14687New kernel configuration options. 14688 14689 Linux known issues: 14690 14691New kernel configuration options not documented in Configure.help 14692yet. 14693 14694 14695Module dependencies not currently implemented. If used, they 14696should be loaded in this order: busmgr, power, ec, system, 14697processor, battery, ac_adapter, button, thermal. 14698 14699Modules will not load if CONFIG_MODVERSION is set. 14700 14701IBM 600E - entering S5 may reboot instead of shutting down. 14702 14703IBM 600E - Sleep button may generate "Invalid <NULL> context" 14704message. 14705 14706Some systems may fail with "execution mutex already acquired" 14707message. 14708 14709 ACPI CA Core Subsystem: 14710 14711Added a new OSL Interface, AcpiOsGetThreadId. This was required 14712for the deadlock detection code. Defined to return a non-zero, 32- 14713bit thread ID for the currently executing thread. May be a non- 14714zero constant integer on single-thread systems. 14715 14716Implemented deadlock detection for internal subsystem mutexes. We 14717may add conditional compilation for this code (debug only) later. 14718 14719ASL/AML Mutex object semantics are now fully supported. This 14720includes multiple acquires/releases by owner and support for the 14721 14722Mutex SyncLevel parameter. 14723 14724A new "Force Release" mechanism automatically frees all ASL 14725Mutexes that have been acquired but not released when a thread 14726exits the interpreter. This forces conformance to the ACPI spec 14727("All mutexes must be released when an invocation exits") and 14728prevents deadlocked ASL threads. This mechanism can be expanded 14729(later) to monitor other resource acquisitions if OEM ASL code 14730continues to misbehave (which it will). 14731 14732Several new ACPI exception codes have been added for the Mutex 14733support. 14734 14735Recursive method calls are now allowed and supported (the ACPI 14736spec does in fact allow recursive method calls.) The number of 14737recursive calls is subject to the restrictions imposed by the 14738SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 14739parameter. 14740 14741Implemented support for the SyncLevel parameter for control 14742methods (ACPI 2.0 feature) 14743 14744Fixed a deadlock problem when multiple threads attempted to use 14745the interpreter. 14746 14747Fixed a problem where the string length of a String package 14748element was not always set in a package returned from 14749AcpiEvaluateObject. 14750 14751Fixed a problem where the length of a String package element was 14752not always included in the length of the overall package returned 14753from AcpiEvaluateObject. 14754 14755Added external interfaces (Acpi*) to the ACPI debug memory 14756manager. This manager keeps a list of all outstanding 14757allocations, and can therefore detect memory leaks and attempts to 14758free memory blocks more than once. Useful for code such as the 14759power manager, etc. May not be appropriate for device drivers. 14760Performance with the debug code enabled is slow. 14761 14762The ACPI Global Lock is now an optional hardware element. 14763 14764 ASL Compiler Version X2015: 14765 14766Integrated changes to allow the compiler to be generated on 14767multiple platforms. 14768 14769Linux makefile added to generate the compiler on Linux 14770 14771 Source Code: 14772 14773All platform-specific headers have been moved to their own 14774subdirectory, Include/Platform. 14775 14776New source file added, Interpreter/ammutex.c 14777 14778New header file, Include/acstruct.h 14779 14780 Documentation: 14781 14782The programmer reference has been updated for the following new 14783interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 14784 14785 ------------------------------------------ 14786Summary of changes for this label: 02_08_01 14787 14788Core ACPI CA Subsystem: Fixed a problem where an error was 14789incorrectly returned if the return resource buffer was larger than 14790the actual data (in the resource interfaces). 14791 14792References to named objects within packages are resolved to the 14793 14794full pathname string before packages are returned directly (via 14795the AcpiEvaluateObject interface) or indirectly via the resource 14796interfaces. 14797 14798Linux OS Services Layer (OSL): 14799 14800Improved /proc battery interface. 14801 14802 14803Added C-state debugging output and other miscellaneous fixes. 14804 14805ASL Compiler Version X2014: 14806 14807All defined method arguments can now be used as local variables, 14808including the ones that are not actually passed in as parameters. 14809The compiler tracks initialization of the arguments and issues an 14810exception if they are used without prior assignment (just like 14811locals). 14812 14813The -o option now specifies a filename prefix that is used for all 14814output files, including the AML output file. Otherwise, the 14815default behavior is as follows: 1) the AML goes to the file 14816specified in the DSDT. 2) all other output files use the input 14817source filename as the base. 14818 14819 ------------------------------------------ 14820Summary of changes for this label: 01_25_01 14821 14822Core ACPI CA Subsystem: Restructured the implementation of object 14823store support within the interpreter. This includes support for 14824the Store operator as well as any ASL operators that include a 14825target operand. 14826 14827Partially implemented support for Implicit Result-to-Target 14828conversion. This is when a result object is converted on the fly 14829to the type of an existing target object. Completion of this 14830support is pending further analysis of the ACPI specification 14831concerning this matter. 14832 14833CPU-specific code has been removed from the subsystem (hardware 14834directory). 14835 14836New Power Management Timer functions added 14837 14838Linux OS Services Layer (OSL): Moved system state transition code 14839to the core, fixed it, and modified Linux OSL accordingly. 14840 14841Fixed C2 and C3 latency calculations. 14842 14843 14844We no longer use the compilation date for the version message on 14845initialization, but retrieve the version from AcpiGetSystemInfo(). 14846 14847Incorporated for fix Sony VAIO machines. 14848 14849Documentation: The Programmer Reference has been updated and 14850reformatted. 14851 14852 14853ASL Compiler: Version X2013: Fixed a problem where the line 14854numbering and error reporting could get out of sync in the 14855presence of multiple include files. 14856 14857 ------------------------------------------ 14858Summary of changes for this label: 01_15_01 14859 14860Core ACPI CA Subsystem: 14861 14862Implemented support for type conversions in the execution of the 14863ASL Concatenate operator (The second operand is converted to 14864match the type of the first operand before concatenation.) 14865 14866Support for implicit source operand conversion is partially 14867implemented. The ASL source operand types Integer, Buffer, and 14868String are freely interchangeable for most ASL operators and are 14869converted by the interpreter on the fly as required. Implicit 14870Target operand conversion (where the result is converted to the 14871target type before storing) is not yet implemented. 14872 14873Support for 32-bit and 64-bit BCD integers is implemented. 14874 14875Problem fixed where a field read on an aligned field could cause a 14876read past the end of the field. 14877 14878New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 14879does not return a value, but the caller expects one. (The ASL 14880compiler flags this as a warning.) 14881 14882ASL Compiler: 14883 14884Version X2011: 148851. Static typechecking of all operands is implemented. This 14886prevents the use of invalid objects (such as using a Package where 14887an Integer is required) at compile time instead of at interpreter 14888run-time. 148892. The ASL source line is printed with ALL errors and warnings. 148903. Bug fix for source EOF without final linefeed. 148914. Debug option is split into a parse trace and a namespace trace. 148925. Namespace output option (-n) includes initial values for 14893integers and strings. 148946. Parse-only option added for quick syntax checking. 148957. Compiler checks for duplicate ACPI name declarations 14896 14897Version X2012: 148981. Relaxed typechecking to allow interchangeability between 14899strings, integers, and buffers. These types are now converted by 14900the interpreter at runtime. 149012. Compiler reports time taken by each internal subsystem in the 14902debug output file. 14903 14904 14905 ------------------------------------------ 14906Summary of changes for this label: 12_14_00 14907 14908ASL Compiler: 14909 14910This is the first official release of the compiler. Since the 14911compiler requires elements of the Core Subsystem, this label 14912synchronizes everything. 14913 14914------------------------------------------ 14915Summary of changes for this label: 12_08_00 14916 14917 14918Fixed a problem where named references within the ASL definition 14919of both OperationRegions and CreateXXXFields did not work 14920properly. The symptom was an AE_AML_OPERAND_TYPE during 14921initialization of the region/field. This is similar (but not 14922related internally) to the problem that was fixed in the last 14923label. 14924 14925Implemented both 32-bit and 64-bit support for the BCD ASL 14926functions ToBCD and FromBCD. 14927 14928Updated all legal headers to include "2000" in the copyright 14929years. 14930 14931 ------------------------------------------ 14932Summary of changes for this label: 12_01_00 14933 14934Fixed a problem where method invocations within the ASL definition 14935of both OperationRegions and CreateXXXFields did not work 14936properly. The symptom was an AE_AML_OPERAND_TYPE during 14937initialization of the region/field: 14938 14939 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 14940[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 14941(0x3005) 14942 14943Fixed a problem where operators with more than one nested 14944subexpression would fail. The symptoms were varied, by mostly 14945AE_AML_OPERAND_TYPE errors. This was actually a rather serious 14946problem that has gone unnoticed until now. 14947 14948 Subtract (Add (1,2), Multiply (3,4)) 14949 14950Fixed a problem where AcpiGetHandle didn't quite get fixed in the 14951previous build (The prefix part of a relative path was handled 14952incorrectly). 14953 14954Fixed a problem where Operation Region initialization failed if 14955the operation region name was a "namepath" instead of a simple 14956"nameseg". Symptom was an AE_NO_OPERAND error. 14957 14958Fixed a problem where an assignment to a local variable via the 14959indirect RefOf mechanism only worked for the first such 14960assignment. Subsequent assignments were ignored. 14961 14962 ------------------------------------------ 14963Summary of changes for this label: 11_15_00 14964 14965ACPI 2.0 table support with backwards support for ACPI 1.0 and the 149660.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 14967the AML interpreter does NOT have support for the new 2.0 ASL 14968grammar terms at this time. 14969 14970All ACPI hardware access is via the GAS structures in the ACPI 2.0 14971FADT. 14972 14973All physical memory addresses across all platforms are now 64 bits 14974wide. Logical address width remains dependent on the platform 14975(i.e., "void *"). 14976 14977AcpiOsMapMemory interface changed to a 64-bit physical address. 14978 14979The AML interpreter integer size is now 64 bits, as per the ACPI 149802.0 specification. 14981 14982For backwards compatibility with ACPI 1.0, ACPI tables with a 14983revision number less than 2 use 32-bit integers only. 14984 14985Fixed a problem where the evaluation of OpRegion operands did not 14986always resolve them to numbers properly. 14987 14988------------------------------------------ 14989Summary of changes for this label: 10_20_00 14990 14991Fix for CBN_._STA issue. This fix will allow correct access to 14992CBN_ OpRegions when the _STA returns 0x8. 14993 14994Support to convert ACPI constants (Ones, Zeros, One) to actual 14995values before a package object is returned 14996 14997Fix for method call as predicate to if/while construct causing 14998incorrect if/while behavior 14999 15000Fix for Else block package lengths sometimes calculated wrong (if 15001block > 63 bytes) 15002 15003Fix for Processor object length field, was always zero 15004 15005Table load abort if FACP sanity check fails 15006 15007Fix for problem with Scope(name) if name already exists 15008 15009Warning emitted if a named object referenced cannot be found 15010(resolved) during method execution. 15011 15012 15013 15014 15015 15016------------------------------------------ 15017Summary of changes for this label: 9_29_00 15018 15019New table initialization interfaces: AcpiInitializeSubsystem no 15020longer has any parameters AcpiFindRootPointer - Find the RSDP (if 15021necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 15022>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 15023AcpiLoadTables 15024 15025Note: These interface changes require changes to all existing OSDs 15026 15027The PCI_Config default address space handler is always installed 15028at the root namespace object. 15029 15030------------------------------------------- 15031Summary of changes for this label: 09_15_00 15032 15033The new initialization architecture is implemented. New 15034interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 15035AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 15036 15037(Namespace is automatically loaded when a table is loaded) 15038 15039The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1504052 bytes to 32 bytes. There is usually one of these for every 15041namespace object, so the memory savings is significant. 15042 15043Implemented just-in-time evaluation of the CreateField operators. 15044 15045Bug fixes for IA-64 support have been integrated. 15046 15047Additional code review comments have been implemented 15048 15049The so-called "third pass parse" has been replaced by a final walk 15050through the namespace to initialize all operation regions (address 15051spaces) and fields that have not yet been initialized during the 15052execution of the various _INI and REG methods. 15053 15054New file - namespace/nsinit.c 15055 15056------------------------------------------- 15057Summary of changes for this label: 09_01_00 15058 15059Namespace manager data structures have been reworked to change the 15060primary object from a table to a single object. This has 15061resulted in dynamic memory savings of 3X within the namespace and 150622X overall in the ACPI CA subsystem. 15063 15064Fixed problem where the call to AcpiEvFindPciRootBuses was 15065inadvertently left commented out. 15066 15067Reduced the warning count when generating the source with the GCC 15068compiler. 15069 15070Revision numbers added to each module header showing the 15071SourceSafe version of the file. Please refer to this version 15072number when giving us feedback or comments on individual modules. 15073 15074The main object types within the subsystem have been renamed to 15075clarify their purpose: 15076 15077ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 15078ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 15079ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 15080 15081NOTE: no changes to the initialization sequence are included in 15082this label. 15083 15084------------------------------------------- 15085Summary of changes for this label: 08_23_00 15086 15087Fixed problem where TerminateControlMethod was being called 15088multiple times per method 15089 15090Fixed debugger problem where single stepping caused a semaphore to 15091be oversignalled 15092 15093Improved performance through additional parse object caching - 15094added ACPI_EXTENDED_OP type 15095 15096------------------------------------------- 15097Summary of changes for this label: 08_10_00 15098 15099Parser/Interpreter integration: Eliminated the creation of 15100complete parse trees for ACPI tables and control methods. 15101Instead, parse subtrees are created and then deleted as soon as 15102they are processed (Either entered into the namespace or executed 15103by the interpreter). This reduces the use of dynamic kernel 15104memory significantly. (about 10X) 15105 15106Exception codes broken into classes and renumbered. Be sure to 15107recompile all code that includes acexcep.h. Hopefully we won't 15108have to renumber the codes again now that they are split into 15109classes (environment, programmer, AML code, ACPI table, and 15110internal). 15111 15112Fixed some additional alignment issues in the Resource Manager 15113subcomponent 15114 15115Implemented semaphore tracking in the AcpiExec utility, and fixed 15116several places where mutexes/semaphores were being unlocked 15117without a corresponding lock operation. There are no known 15118semaphore or mutex "leaks" at this time. 15119 15120Fixed the case where an ASL Return operator is used to return an 15121unnamed package. 15122 15123------------------------------------------- 15124Summary of changes for this label: 07_28_00 15125 15126Fixed a problem with the way addresses were calculated in 15127AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 15128manifested itself when a Field was created with WordAccess or 15129DwordAccess, but the field unit defined within the Field was less 15130 15131than a Word or Dword. 15132 15133Fixed a problem in AmlDumpOperands() module's loop to pull 15134operands off of the operand stack to display information. The 15135problem manifested itself as a TLB error on 64-bit systems when 15136accessing an operand stack with two or more operands. 15137 15138Fixed a problem with the PCI configuration space handlers where 15139context was getting confused between accesses. This required a 15140change to the generic address space handler and address space 15141setup definitions. Handlers now get both a global handler context 15142(this is the one passed in by the user when executing 15143AcpiInstallAddressSpaceHandler() and a specific region context 15144that is unique to each region (For example, the _ADR, _SEG and 15145_BBN values associated with a specific region). The generic 15146function definitions have changed to the following: 15147 15148typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 15149UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 15150*HandlerContext, // This used to be void *Context void 15151*RegionContext); // This is an additional parameter 15152 15153typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 15154RegionHandle, UINT32 Function, void *HandlerContext, void 15155**RegionContext); // This used to be **ReturnContext 15156 15157------------------------------------------- 15158Summary of changes for this label: 07_21_00 15159 15160Major file consolidation and rename. All files within the 15161interpreter have been renamed as well as most header files. This 15162was done to prevent collisions with existing files in the host 15163OSs -- filenames such as "config.h" and "global.h" seem to be 15164quite common. The VC project files have been updated. All 15165makefiles will require modification. 15166 15167The parser/interpreter integration continues in Phase 5 with the 15168implementation of a complete 2-pass parse (the AML is parsed 15169twice) for each table; This avoids the construction of a huge 15170parse tree and therefore reduces the amount of dynamic memory 15171required by the subsystem. Greater use of the parse object cache 15172means that performance is unaffected. 15173 15174Many comments from the two code reviews have been rolled in. 15175 15176The 64-bit alignment support is complete. 15177 15178------------------------------------------- 15179Summary of changes for this label: 06_30_00 15180 15181With a nod and a tip of the hat to the technology of yesteryear, 15182we've added support in the source code for 80 column output 15183devices. The code is now mostly constrained to 80 columns or 15184less to support environments and editors that 1) cannot display 15185or print more than 80 characters on a single line, and 2) cannot 15186disable line wrapping. 15187 15188A major restructuring of the namespace data structure has been 15189completed. The result is 1) cleaner and more 15190understandable/maintainable code, and 2) a significant reduction 15191in the dynamic memory requirement for each named ACPI object 15192(almost half). 15193 15194------------------------------------------- 15195Summary of changes for this label: 06_23_00 15196 15197Linux support has been added. In order to obtain approval to get 15198the ACPI CA subsystem into the Linux kernel, we've had to make 15199quite a few changes to the base subsystem that will affect all 15200users (all the changes are generic and OS- independent). The 15201effects of these global changes have been somewhat far reaching. 15202Files have been merged and/or renamed and interfaces have been 15203renamed. The major changes are described below. 15204 15205Osd* interfaces renamed to AcpiOs* to eliminate namespace 15206pollution/confusion within our target kernels. All OSD 15207interfaces must be modified to match the new naming convention. 15208 15209Files merged across the subsystem. A number of the smaller source 15210and header files have been merged to reduce the file count and 15211increase the density of the existing files. There are too many 15212to list here. In general, makefiles that call out individual 15213files will require rebuilding. 15214 15215Interpreter files renamed. All interpreter files now have the 15216prefix am* instead of ie* and is*. 15217 15218Header files renamed: The acapi.h file is now acpixf.h. The 15219acpiosd.h file is now acpiosxf.h. We are removing references to 15220the acronym "API" since it is somewhat windowsy. The new name is 15221"external interface" or xface or xf in the filenames.j 15222 15223 15224All manifest constants have been forced to upper case (some were 15225mixed case.) Also, the string "ACPI_" has been prepended to many 15226(not all) of the constants, typedefs, and structs. 15227 15228The globals "DebugLevel" and "DebugLayer" have been renamed 15229"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 15230 15231All other globals within the subsystem are now prefixed with 15232"AcpiGbl_" Internal procedures within the subsystem are now 15233prefixed with "Acpi" (with only a few exceptions). The original 15234two-letter abbreviation for the subcomponent remains after "Acpi" 15235- for example, CmCallocate became AcpiCmCallocate. 15236 15237Added a source code translation/conversion utility. Used to 15238generate the Linux source code, it can be modified to generate 15239other types of source as well. Can also be used to cleanup 15240existing source by removing extraneous spaces and blank lines. 15241Found in tools/acpisrc/* 15242 15243OsdUnMapMemory was renamed to OsdUnmapMemory and then 15244AcpiOsUnmapMemory. (UnMap became Unmap). 15245 15246A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 15247When set to one, this indicates that the caller wants to use the 15248 15249semaphore as a mutex, not a counting semaphore. ACPI CA uses 15250both types. However, implementers of this call may want to use 15251different OS primitives depending on the type of semaphore 15252requested. For example, some operating systems provide separate 15253 15254"mutex" and "semaphore" interfaces - where the mutex interface is 15255much faster because it doesn't have all the overhead of a full 15256semaphore implementation. 15257 15258Fixed a deadlock problem where a method that accesses the PCI 15259address space can block forever if it is the first access to the 15260space. 15261 15262------------------------------------------- 15263Summary of changes for this label: 06_02_00 15264 15265Support for environments that cannot handle unaligned data 15266accesses (e.g. firmware and OS environments devoid of alignment 15267handler technology namely SAL/EFI and the IA-64 Linux kernel) has 15268been added (via configurable macros) in these three areas: - 15269Transfer of data from the raw AML byte stream is done via byte 15270moves instead of word/dword/qword moves. - External objects are 15271aligned within the user buffer, including package elements (sub- 15272objects). - Conversion of name strings to UINT32 Acpi Names is now 15273done byte-wise. 15274 15275The Store operator was modified to mimic Microsoft's 15276implementation when storing to a Buffer Field. 15277 15278Added a check of the BM_STS bit before entering C3. 15279 15280The methods subdirectory has been obsoleted and removed. A new 15281file, cmeval.c subsumes the functionality. 15282 15283A 16-bit (DOS) version of AcpiExec has been developed. The 15284makefile is under the acpiexec directory. 15285